Numbers of the form 10^n + 7

Results (last updated May 25, 2020) are listed here.
Factors are uploaded to the database, possibly with a short delay.

The program primo of Marcel Martin is used to prove the primality of (co-)factors with at least 301 digits.
Certificates are available.

n digits date factor(s) certificate
314301Dec 30, 2010 (Anonymous)29 71 1031 43910533certificate
318314Nov 1, 2011 (Anonymous)23 1187certificate
339324Jan 14, 2011 (Anonymous)1362619 1222252979certificate
342306Jul 1, 201929 38551188013209029611621101176660239certificate
348331Jan 15, 2011 (Anonymous)373 25591057 96645403certificate
350331May 15, 201943 67 1171 26728634607833certificate
351345Apr 24, 20209713117certificate
356354Jan 15, 2011 (Anonymous)151certificate
367324May 24, 201953 13219 14648560396174079 9452306341417035999731certificate
368306Jul 1, 2019204107 30659539871 4388189346311 11096706337382148758002200575891419certificate
371351Apr 27, 202043 877 15271271644058783certificate
372365Jan 15, 2011 (Anonymous)2153 20771certificate
374369Apr 27, 2020108557certificate
380324Jul 1, 201953 65881 13925966534696479 3521450753385849222822778843459583certificate
382314Jul 1, 2019444656147292491 127043564245267947169 2266763891036542186218151517624009certificate
386318Jun 2, 2019197 19620259 624237391 3524248879 87007146413611 1133752297955619344658560479certificate
388383Jan 16, 2011 (Anonymous)331 1283certificate
391380Apr 27, 2020880285078007certificate
392387Jan 16, 2011 (Anonymous)43 21673certificate
394309Jul 1, 20195023 89021 97653011 16129739086007 540641556454288835494951 30542301296302264800562348333981certificate
395331Jun 2, 2019353 1820557 192430813 135052256588012243666269 3964763668517767391967763certificate
407354Jul 15, 2019486713 705531767 936121028803 1774512792818950064791791841certificate
412413Jan 15, 2011 (Anonymous)certificate
421373Jun 2, 201959 569893 6750538740173863 16276403401716062404797071certificate
422389Sep 5, 2012 (Edwin Hall)2251 43287001 2971599803 4490958410317certificate
423342Oct 29, 2019883 1531 2617 305236507564358885389996821757 5785004410494097996663392389344776338672597certificate
427359Jun 2, 2019353 503 8741 642826761223 310935815710778436614759 702801692446053114072397certificate
428388May 29, 201923 995341 14239493759 31949793212772186648499certificate
431417May 15, 2019151 1956385011019certificate
433419Jun 19, 2013 (Andi_HB)17 359 22663287133certificate
435394May 20, 201919 887 2295971 72894086045927 146203214509939793certificate
445420Apr 30, 202053 163 111533 162646283 244223713certificate
450325Apr 13, 202023 23 743 139326037 2861536860581166452271931 215811188038216170051156001082079570194029 9908344333941843670601195257298935069264129559certificate
457438Feb 27, 2016 (Frank Schickel)23156352262125930439certificate
458389Jul 15, 201953 1768523 2572765087 4225469661794564860037 8489078947678580528911097509943certificate
460447May 15, 201913681372994759certificate
465372Jul 15, 201917 181 223 93241 3156503224289 192560245223909 557834257326303613657957 146887137499006553910338056504069certificate
480413Jun 20, 2019109437913882824344581 152277633843791431273223 2009508768556855584395519certificate
497369Jul 15, 201917 43 43 53 8443 741229 28663068666503 135968061526383293 35692493962019032279487 159791662531069060110438107 947813060844436233950881239994261certificate
499433Jul 19, 2019277 314339867 403702919 503437884399113 259133983389318627660356612540761certificate
508489Apr 26, 2011 (Ignacio Santos)463 125599231444766983certificate
510503Jan 15, 2011 (Anonymous)29 53 45893certificate
512411Apr 13, 202014029 144341 37915777 288585965370817 129743881653717285201996263873 56244221768969070848578914850733881104409certificate
514506Jan 15, 20112017 137699certificate
517501May 15, 201911589755940849859certificate
521478Jul 15, 201947 1544448491 264753188051474597150734793597689certificate
524383Apr 30, 202071 1573673011663 17062135015129829 804293126570775809040739707281 138767044332155782555628429307395642911 46769205657187460702175754284914680332253091certificate
528503Jan 15, 2011 (Anonymous)1723 13573609193 1677021357467certificate
534529Jan 18, 2011 (Anonymous)373 1619certificate
540379Aug 20, 2019268664516359409 4953786089989543 148574543916077143 586164858619289791 9200311749217528686301 11125909748145428760784730486517377 20380319274753001607786314534402945712951certificate
541482Jul 6, 20198172104851538389 8700759559392968989 12597444455895096100048661certificate
559538Jan 18, 2011 (Anonymous)71 509 809 6221 13016538023certificate
564515Apr 13, 202026237 284741 5051222003045930105789339025690656179589certificate
572539Jul 1, 20193823 775440465426636429857222296739certificate
575567Jan 17, 2011 (Anonymous)53 1201 2371certificate
578559Jan 18, 2011 (Anonymous)233 35407 3278913291887certificate
591559May 29, 2019313 75289 1951511 12369955306367882231certificate
594549Jul 6, 201929 71 71 317 30524357861 2236403936736419889492133931certificate
599500Jul 23, 20191035949 266554315891 15865790529145011043283 537568668589120731680428317533 1700250932813523919946849461141certificate
619610Jan 20, 2011 (Anonymous)353 6365407certificate
631539Oct 29, 2019619 2940092843839 8217430015677915788607839918088735991 35240735743932865710314169707776902730831certificate
639560Aug 20, 20191514131 2979958897 10223514312353 1760021854896807107 223417044226258018649340797515817certificate
641602May 20, 201917 3345607 17386189872211 1358708138011830769certificate
649605May 15, 20191009 621359 170236999 27372350551411 178242765841979certificate
652643Jan 23, 2011 (Anonymous)8317 1121509certificate
671625Jul 6, 201940853 2990593726033173121 193145851010371146641387certificate
675602Jul 15, 2019198503262149318221481 606893418419370640103455621 738132431796260143744399703certificate
676673Jan 29, 2011 (smh)3137certificate
685644Apr 13, 20206722393 27042072025235955249941634481369147certificate
689680Jan 30, 2011 (smh)17 3271 175919certificate
690652May 15, 20198117 35353530059 141292548779 6235757788219certificate
691689Jan 31, 2011 (smh)107certificate
697625Jul 15, 201932911 45152659 77081637897215333 231297622220355944909 261465088770553381554521certificate
700701Jan 3, 2011 (Anonymous)certificate
703671Jul 3, 20195131813 67156991469353237558161721certificate
706650Oct 29, 201929 277 17291 103406101 2247013232531 9422225860551111939324544237certificate
708655Jul 15, 201910414167971 136696633316952451 594419639914734935294670581certificate
724681May 16, 2019263 566539 6782059 41243701 74954387 15238377658457certificate
728701May 15, 201943 12704022451 3305632692284743certificate
729683Jul 15, 201917029703 1513810303 766901960269252434989911243403certificate
745695Jul 19, 20191816942993 2831312117063 51154381276567423223712353089certificate
747726May 15, 2019353 56531 190833668415961certificate
776742May 29, 2019328188491356261 95327999579862146521certificate
786776May 15, 201982542520883certificate
790773Jul 15, 2011 (Anonymous)29 109 83777 2053304779certificate
797762Jun 2, 201947 107 1471 1198063 49829094696644867656687certificate
808790Mar 14, 2015 (RKN_ChristianB)420870811 9367209289certificate
813803Aug 20, 2011 (klajok)19 13331 90031certificate
821736Apr 13, 2020309242150952258710838739 405575431015713885614597662469 181010520846800252548253052308507certificate
831805Jun 2, 201919 317 25951098153051954554647certificate
852826Jul 3, 2019149 3039720426632267101090777certificate
856784Jul 15, 2019193 145546409 25603665601882046941894351609 1931400037245413695840264634479267certificate
873868Jan 31, 2011 (smh)129457certificate
878836May 24, 201967 389 1297 26780800922638289 4189514910276720749certificate
879799Jul 19, 2019902107956439 1468782452281 6368058526009745240219824963 13824458498879071206731378561certificate
898896Jan 27, 2011 (Markus Tervooren)109certificate
906871Apr 13, 2020373 87511 22916673748612212187760305033certificate
959958May 1, 202043certificate
967924May 24, 20195077 1154492869 53756790203 98285028910027369169certificate
984943May 15, 201912357503 20086363553 115121967671 33045168494153certificate
9991000Jun 3, 2006 (Tyler Cadigan)certificate
1009992Oct 1, 2011 (Markus Tervooren)17 107 167 23689 20809057certificate
10391017May 20, 201910457 4664157985507745201certificate
10561048Oct 20, 2011 (Anonymous)53 6319499certificate
10641050May 15, 201943 191 15704560649certificate
10871029Jul 6, 20191163 5101 24178447 9859422257276611 59231835616318884289837023473certificate
11361080Jun 17, 2019113 990743005381696561634777041 2969128211985451850336779939certificate
11551135May 15, 201919 1259 31397 364499763917certificate
11581124Jul 21, 2019331 337 1033 704998920537297769935372391certificate
12401226Oct 2, 2011 (Markus Tervooren)193 1731311 1761827certificate
12971264May 15, 201917 99969943 222540677 3100215660627091certificate
13061290May 15, 2019331711 207718840541certificate
13451331Apr 18, 2011 (Markus Tervooren)17 663407 26617457certificate
13641315May 15, 201971 270861299 30423285929 103169100647 246407155371583207certificate
13831384Sep 6, 2006 (Tyler Cadigan)certificate
13861356May 15, 201919867 145289 57231871 24810982959991certificate
14021370Jul 21, 2019157679 1263935785271760453041400241certificate
14251420Jan 12, 2012 (Edwin Hall)17 19 661certificate
14291422Jan 12, 2012 (Edwin Hall)14319233certificate
14311425Sep 22, 2011 (MyDogBuster)503 13763certificate
14341431Jan 13, 2012 (Edwin Hall)29 71certificate
14441435Jan 14, 2012 (Edwin Hall)149 191 113149certificate
14511411May 29, 2019353 433 7019 888816367 32742078822576153604033certificate
14571442Dec 22, 2016 (Jayder)17 167887 2655338053certificate
14731425May 24, 201917 17 112410073729 12889371534869513 4935555163251781417certificate
14961409Jul 6, 201939461 2380501866220871 138578999591401181597 18375614088830386255331 6779243470322187036060137certificate
15081477Jun 20, 20193319 15334089915273900918320447779certificate
15101460May 24, 2019263 2557 383942891621 25027890677567 25501738099277367029certificate
15761552May 29, 201953 8317 15508979488753168541certificate
16871633May 20, 2019136337 659639 1522483 477104743 11961572280101 1521036051156527certificate
16881641May 29, 20191709 1873 10016009501 12681508163 1865562850268806928509certificate
17591740May 15, 2019653 975287 70872722647certificate
17791769Jun 2, 2012 (Edwin Hall)317 47556401certificate
18271824Aug 3, 2012 (Edwin Hall)4931certificate
18291797Jul 21, 201997 1201338283891119243699564491443certificate
18761869Aug 16, 2014 (RobertS)75559331certificate
18911825Jun 2, 2019229 257 2953 34080728844733 32953329535724159 22598626114198680758483605099certificate
19221865Jul 21, 2019328283 3327787 42188329 95503708021 1884841543861014070906723459certificate
19331909May 15, 2019503 607 2242277 5897152205239certificate
19481932Jul 20, 2019277 599 69006015457certificate
19721932May 16, 2019159395293 3069803646728821 74023279403772451certificate
19731929May 20, 201961 809 16696109 13809497924207 48025342272200707681certificate
19801971Feb 11, 2017 (Jayder)2272537093certificate
19901964May 15, 201923 4111 28771 267017 751179420811certificate
20102007Dec 1, 2012 (RichD)6827certificate
20582010May 29, 201914723 244547 6150377 8476105163 9188328962206945084003certificate
20831992Jul 23, 201953 509 3218209 1277066071 5817410246939326631 800802900622661930449 57372678988915217712138564385817certificate
22212188May 15, 201984751 5943629 4675947743 1068324802621certificate
22592214Jul 17, 20198501 1301507 4272787069 21180957117616576800072053certificate
23722358Feb 18, 2017 (Edwin Hall)157637 1540352227certificate
24382414Feb 19, 2017 (Edwin Hall)2713 14891 18542647 3856356919certificate
25652556May 15, 20194683578819certificate
26302626Oct 30, 2013 (RichD)81853certificate
26462614Aug 20, 20191600033 67827722577919458328876613certificate
26952680Aug 13, 2014 (RichD)24372919 356887969certificate
27892768May 20, 201997 43997 1657448480711237certificate
27992768May 16, 201959 71 3097129967153 1393232913546577certificate
28272766May 29, 2019353 941 142613352908017 3540218975565852137 252783852944833738961239certificate
28342807May 29, 201929 71 800620668046530280050719certificate
30022997Mar 27, 2014 (RichD)23 29 1471certificate
30523018Aug 20, 2019277 23767543 12266883094587947189713087certificate
30763036May 24, 2019107 20269 21011 2417310583 173462025386283569303certificate
31063100Nov 12, 2014 (RichD)631 2143certificate
31443093Jul 1, 2019599 1026182539 20158244417602634177 150053074361032901251certificate
32133196Mar 2, 2017 (Edwin Hall)140281 1071919 3497519certificate
33383264Aug 20, 201929 210818180813599 120804524019048382886558749 153293714918621936295397210597351certificate
33973377May 15, 2019277 50890121 12523373897certificate
34203384May 29, 201923 455863 8281132141 51405056121703933111certificate
35013445Aug 20, 2019155816324161 2495730414752052421 1481990275905071856347023571certificate
35203493May 24, 20191278849503 3061975286254974163certificate
35413537May 9, 2017 (Edwin Hall)10331certificate
35493545May 9, 2017 (Edwin Hall)19 607certificate
35553464Jul 17, 201921919277 1487758303 15009781409419 3170972655748393 3998588599941279265739 1773511598550873995312479certificate
36413622Jun 17, 201915011845034859436189certificate
37583737May 15, 201929 888413017 55102604251certificate
37893728May 24, 20195135941579 2914867833707 28312709676209663 91125401113426001078551certificate
38693812Aug 1, 20191149263066626541 135938530450606189 15352774864598102243283493certificate
38773832Jul 3, 201953 69870659 904181687 2128765464455516767362621533certificate
40464012May 26, 201943 53 67 33329 299032031 26246275133775797certificate
40494016Oct 29, 201917 37003 6557070983879497479267252059certificate
40834053Jun 20, 2019107 29590908492604909826678060149certificate
41954168Jun 2, 2019257 809 35661569469987345164927certificate
42114189May 20, 201967 1083073 239750754490127certificate
42554225May 24, 20193803 35281 7869084492630057631931certificate
43564288Aug 31, 2019109219069 2843048787185729063 4835556924928042903 447252514918768938930833certificate
44154391Apr 28, 201915423581 51728147 2471975581certificate
44264401Apr 28, 201935023 1027427 22024549 67438219certificate
45014444Aug 31, 201953 277 31531 59219 7330623308663953673087 33886853766137477597819certificate
45974562May 31, 201959 712823233 3815669318981326260918103certificate
46944657May 26, 201951059 54019921 144907253 141596486830439573certificate
47584744Apr 29, 2019389 571 6337 136733certificate
49804937Apr 13, 202033035881 16299974077 105761052742662142230446491certificate
50004947Oct 29, 201940723163559705429599716453 7587015611379932999679913079certificate
50765077Jan 16, 2019 (Edwin Hall)certificate
51155078Oct 29, 201919 24360087625891 80431320577748609535151certificate
51265118Feb 11, 2019 (Edwin Hall)211298579certificate
52275215Apr 30, 2019353 46601 459623certificate
52565239Jun 13, 2019410437589143250629certificate
53105220May 25, 2019183094438907 339173349061 1675901512515143 11278231051925581 1042901805253711981 2439730173964418267certificate
53785348Jul 17, 201923 165544901 603987197631472239397certificate
53975341May 25, 201947 4363 7297 9587 2633697929 160431024019577 19521273371861148817certificate
54955490Jun 24, 201943 6841certificate
55055488May 21, 201917 181 64790169612349certificate
55085503Jun 24, 2019364291certificate
55435544Jun 24, 2019certificate
57305701May 16, 201923 21757 117979 1184429 6454382959747certificate
57825774Jun 24, 2019823 952921certificate
58155780Jun 13, 201959 937 1101517 5251098487 1267556202261409certificate
59675939Jun 14, 2019367 101285144003 492689937943681certificate
63446345Jun 25, 2019certificate
63996391Jun 25, 201953 8216669certificate
64016394Jun 26, 201917 869179certificate
64996450Jun 17, 2019257 62907413 230667801097 22250649320705884729513950167certificate
65486489Jun 1, 2019331 9603318643 259205949059 4429121616585607 48263943517504010689certificate
65526526Jun 2, 20193204511 43876692315050529019certificate
65726543Jun 2, 2019132071 132727379 44629736864413709certificate
66236574Jun 13, 20191667 118213 106258050283500707017 1063892078725762696489certificate
67436682Jun 13, 201959 39863 20156049769 27799787003 13182967236661 855535527935182450519certificate
68866857Jun 13, 2019631 2293 554677 1149373 123189306613certificate
69826959Jun 13, 2019491 360901 1325331349947469certificate
70327017Jun 15, 20192033417748328019certificate
70677044Jun 13, 2019433 829 37507 56310113421673certificate
73507274Jun 19, 20191033 16363 2495077701419969430283 57945248716142770917131 12069580599338784045754007certificate
79077865Jul 17, 201953 67 11769094820316091 26667699046357145223851certificate
79147851Jun 7, 201924578732351293073 1875657057305264277647 30301922937599010220234189certificate
79497920Jun 17, 201928307186417 30802204432305040817certificate
80438033Jun 29, 2019353 41671813certificate
81658148Jul 3, 201997 3659141 432938897certificate
82488222Apr 17, 2020823 1108629480723609025532929certificate
84318312Apr 21, 202011773637 12215882684407 629952603458393 6635707366338173 86118809883356508997 216818028958743180711719 72520993738336579345480217certificate
85558531Jun 24, 2019353 5823314251239205241119certificate
85918567Jun 5, 201933359 3812729 12365899738483certificate
86588625Jun 23, 201929 1390789 103247761843 1042156290049081certificate
87088687May 24, 201943 2221 25453 949104746111certificate
88398809Jul 4, 20193038647 15335707 18976787 3303853907certificate
89118879May 29, 20196084172778011 17578243362639025453certificate
90769051Jun 21, 2019878275379 28408165782342859certificate
90949049Jun 15, 20192731 523307 60795151 187164558473 522062966771050349certificate
92069177Jun 8, 201923 151 197 48688404139 20654884433087certificate
92409207May 31, 2019136649 351121 36371953 2163092859425159certificate
98939887Jul 1, 201961 97 1031certificate

May 25, 2020
Alfred Reich