PRP Records

Probable Primes Top 10000

(301352 PRPs in the top)


What is a PRP ?

A PRP is a probable prime number, a number that nobody knows how to prove or disprove its primality.
Here are some criterions that can be used to recognize these numbers :

- N does not have any prime factor up to 2^32.
- N cannot be trivially written into a product.
- Take 3 square-free consecutive bases such that (b1/N)=(b2/N)=(b3/N)= -1. N should be such that b1^((N-1)/2)=b2^((N-1)/2)=b3^((N-1)/2)= -1 (mod N).
- Take a prime base such that (b/N)= -1 and b<>b1<>b2<>b3. N should pass the strong test in base b.
- or more (if someone has got an idea) !!!


Submit your PRPs


See the Top discoverers
See the Latest PRPs
Search by form



1-250   251-500   501-750   751-1000   1001-1250   1251-1500   1501-1750   1751-2000   
2001-2250   2251-2500   2501-2750   2751-3000   3001-3250   3251-3500   3501-3750   3751-4000   
4001-4250   4251-4500   4501-4750   4751-5000   5001-5250   5251-5500   5501-5750   5751-6000   
6001-6250   6251-6500   6501-6750   6751-7000   7001-7250   7251-7500   7501-7750   7751-8000   
8001-8250   8251-8500   8501-8750   8751-9000   9001-9250   9251-9500   9501-9750   9751-10000   


Rank Probable prime Digits (> 50000) Who ? When ?
6751(10^110503-1)/9+8*(10^30251-1)/9*10^40126110503Makoto Morimoto09/2020
67523*(10^110503-1)/9+1*10^106036+1*10^4466110503Makoto Morimoto09/2020
67533*(10^110503-1)/9+1*10^58962+1*10^51540110503Makoto Morimoto09/2020
67543*(10^110503-1)/9+1*10^78213+1*10^32289110503Makoto Morimoto09/2020
67553*(10^110503-1)/9+2*10^76898+2*10^33604110503Makoto Morimoto09/2020
67563*(10^110503-1)/9-1*10^100802-1*10^9700110503Makoto Morimoto09/2020
67573*(10^110503-1)/9-1*10^76355-1*10^34147110503Makoto Morimoto09/2020
67583*(10^110503-1)/9-2*10^105704-2*10^4798110503Makoto Morimoto09/2020
67597*(10^110503-1)/9+1*(10^27685-1)/9*10^41409110503Makoto Morimoto09/2020
67607*(10^110503-1)/9+1*(10^91035-1)/9*10^9734110503Makoto Morimoto09/2020
67617*(10^110503-1)/9-1*(10^23717-1)/9*10^43393110503Makoto Morimoto09/2020
67627*(10^110503-1)/9-1*10^57906-1*10^52596110503Makoto Morimoto09/2020
67637*(10^110503-1)/9-1*10^72287-1*10^38215110503Makoto Morimoto09/2020
67647*(10^110503-1)/9-2*(10^53823-1)/9*10^28340110503Makoto Morimoto09/2020
67657*(10^110503-1)/9-2*(10^88659-1)/9*10^10922110503Makoto Morimoto09/2020
67667*(10^110503-1)/9-3*(10^79921-1)/9*10^15291110503Makoto Morimoto09/2020
67677*(10^110503-1)/9-3*10^60024-3*10^50478110503Makoto Morimoto09/2020
67687*(10^110503-1)/9-4*(10^103091-1)/9*10^3706110503Makoto Morimoto09/2020
67697*(10^110503-1)/9-4*10^103658-4*10^6844110503Makoto Morimoto09/2020
67707*(10^110503-1)/9-4*10^78188-4*10^32314110503Makoto Morimoto09/2020
67717*(10^110503-1)/9-5*(10^35035-1)/9*10^37734110503Makoto Morimoto09/2020
67727*(10^110503-1)/9-6*(10^67347-1)/9*10^21578110503Makoto Morimoto09/2020
67737*(10^110503-1)/9-6*10^60391-6*10^50111110503Makoto Morimoto09/2020
6774(10^110503-1)-4*(10^96247-1)/9*10^7128110503Makoto Morimoto09/2020
6775(10^110503-1)-4*10^74037-4*10^36465110503Makoto Morimoto09/2020
6776(10^110503-1)-4*10^77787-4*10^32715110503Makoto Morimoto09/2020
6777(10^110503-1)-4*10^91179-4*10^19323110503Makoto Morimoto09/2020
6778(10^110503-1)-5*(10^99143-1)/9*10^5680110503Makoto Morimoto09/2020
6779(10^110503-1)-7*(10^85075-1)/9*10^12714110503Makoto Morimoto09/2020
6780(10^110503-1)-7*10^100712-7*10^9790110503Makoto Morimoto09/2020
6781(10^110503-1)-7*10^76427-7*10^34075110503Makoto Morimoto09/2020
6782(10^110503-1)-7*10^90451-7*10^20051110503Makoto Morimoto09/2020
6783(10^110503-1)-8*10^106252-8*10^4250110503Makoto Morimoto09/2020
6784(11*10^110496+49)/3110497Robert Price07/2018
678525447^21958+21958^25447110481Hans Havermann11/2020
6786(31*2^366976+1)/7110472Lelio R Paula03/2014
67877*10^110468-23110469Robert Price07/2019
67885*3^231464-2^231464110438Jon Grantham08/2023
67892^366853+5711110434Lelio R Paula05/2017
6790(21181*2^366833+1)/3110432Lelio R Paula07/2014
67912^366816+315110423Lelio R Paula05/2017
67922^366775-2787037110411Enzo Doria03/2016
6793(112*10^110405-1)/3110407Serge Batalov12/2014
67942^366751+2797553110404Enzo Doria03/2016
679525276^23331+23331^25276110404Hans Havermann10/2020
67962^366748+255110403Lelio R Paula05/2017
67972^366738-2985110400Yves Minet09/2014
6798(23*2^366739+1)/74575110396Lelio R Paula03/2014
6799(2^366722+1314)/2110395Stefano Morozzi02/2021
68002^366716+1871791110393Enzo Doria05/2016
6801(239*23^81066-349)/22110391Eric Chen08/2023
68022^366695+1334025110387Henri Lifchitz10/2024
68032^366649+1871687110373Enzo Doria05/2016
68042^366629-351205110367Enzo Doria06/2015
6805(31*10^110363+257)/9110364Robert Price12/2021
6806(17*19^86292-215)/18110347Eric Chen01/2023
68082^366558+1874479110345Enzo Doria06/2016
680725132^24581+24581^25132110345Hans Havermann10/2020
6809(2^366539+770)/2110339Stefano Morozzi09/2020
681026368^15285+15285^26368110331Hans Havermann10/2020
6811(23*10^110290+19)/3110291Robert Price07/2019
681218^87853-4409110280Enzo Doria03/2013
681328490^7419+7419^28490110267Hans Havermann11/2020
68142^366218-23110243Lelio R Paula02/2013
6815(21*2^366193-1)/197110235Lelio R Paula03/2014
68162^366178-343991110231Enzo Doria07/2015
681712^102123-11110210Riley Fisher09/2023
681825777^18798+18798^25777110174Hans Havermann10/2020
68192^365944+1871341110161Enzo Doria05/2016
68202^365838-461267110129Enzo Doria07/2015
682130152^4491+4491^30152110126Hans Havermann11/2020
68222^365802+23359110118Enzo Doria10/2023
682310^110111+464019110112Patrick De Geest05/2021
682410^110111-40001110111Robert Price01/2021
68252^365763-6555110106Lelio R Paula04/2017
6826(2^365689+2^182845+1)/511008311/2006
68272^365666-459161110077Enzo Doria05/2015
68283*10^110076-7110077Robert Price08/2015
682913^98785-72110041Lelio R Paula03/2017
6831(25^78707+1)/26110027Robert Price06/2013
6830(7*10^110027-277)/9110027Robert Price02/2022
6832(16*10^110014-73)/3110015Robert Price07/2020
6833(7*10^110006-151)/9110006Robert Price02/2018
68346^141361-7110001Lelio R Paula11/2014
683510^110000+8029681110001Hayden Chesnut11/2024
683610^110000+2044477110001Hayden Chesnut11/2024
683710^110000+76407110001Hayden Chesnut11/2024
683810^110000+167311110001Hayden Chesnut11/2024
683920^84536+81109984Lelio R Paula03/2017
68405*2^365347-9109982Lelio R Paula09/2014
68419*6^141303+7109957Lelio R Paula11/2014
684227635^9522+9522^27635109953Hans Havermann11/2020
684378^58099+77109929Norbert Schneider02/2015
68442*10^109928-7109929Robert Price10/2015
684530580^3933+3933^30580109927Hans Havermann11/2020
684626380^14689+14689^26380109926Hans Havermann11/2020
6847(2^365161+1130)/2109925Stefano Morozzi09/2020
6848(27*2^365137-1)/2021109916Lelio R Paula03/2014
684929^75157-30109910Anonymous09/2024
6850(4441*29^75152-24)/7109905Curtis Bright05/2015
6851(2^365087+7)/6015109899Lelio R Paula01/2014
6852(2^365069+3774)/2109897Stefano Morozzi02/2021
685329652^5083+5083^29652109894Mark Rodenkirch10/2020
6854(2^365049+722)/2109891Stefano Morozzi09/2020
6855(35*10^109888-89)/9109889Robert Price02/2022
685618^87533-11109878Lelio R Paula04/2017
68572^364982-5109871Henri Lifchitz04/2006
68583*10^109861+59109862Robert Price08/2018
68595*10^109860-69109861Robert Price02/2021
68602^364936-1867979109857Enzo Doria04/2016
686127013^11652+11652^27013109846Hans Havermann10/2020
68622^364867-112087109836Enzo Doria06/2014
68634^182415-85061109825Mike Oakes06/2011
6864(2^364809+1034)/2109819Stefano Morozzi09/2020
686524972^24972-8323^8323109814Henri Lifchitz10/2024
6866(53*10^109809-287)/9109810Robert Price02/2022
6867(52*10^109807-133)/9109808Robert Price09/2021
686825708^18675+18675^25708109806Hans Havermann10/2020
6869(17^89227+16^89227)/33109788Robert Price08/2013
68702^364687-187109782Lelio R Paula01/2012
68712^364644+67109769Lelio R Paula01/2012
6872(9787*2^364625-1)/24947109763Lelio R Paula05/2015
6873(2^364616+5)/9109760Lelio R Paula01/2014
6874(55*10^109759+89)/9109760Robert Price03/2019
6875(14*32^72921+4171)/31109757Eric Chen04/2023
687612^101694+73109747Lelio R Paula03/2017
687713^98518-66109744Lelio R Paula03/2017
6878(35^71069+2^71069)/37109734Robert Price01/2025
6879(8*10^109721-269)/9109721Robert Price09/2021
68802^364478-113261109719Enzo Doria07/2014
6881(2^364513+1)/(3*44290516579)109719Gord Palameta08/2018
6882(24737*2^364454+1)/3109716Lelio R Paula07/2014
688327814^8777+8777^27814109681Hans Havermann10/2020
6884(62*10^109673+1)/9109674Serge Batalov11/2010
68853^229824+340109654Lelio R Paula03/2017
6886(16623*33^72206-8095)/16109649Eric Chen05/2023
6887(2*10^109645-71)/3109645Robert Price12/2017
6888V(786978)109644Serge Batalov07/2024
68892^364169-112813109626Enzo Doria06/2014
689028822^6359+6359^28822109622Hans Havermann11/2020
689110^109615+21109616Lelio R Paula03/2017
689210^109615-456267109615Patrick De Geest03/2017
6893522^40331-40331^522109607Norman Luhn09/2024
68942^364094-113109604Lelio R Paula01/2012
689525251^21898+21898^25251109600Hans Havermann11/2020
6896(4^182026+11)/3109591Robert Price02/2017
68972^364041-6883109588Lelio R Paula09/2011
689812^101545+11109586Lelio R Paula03/2017
689926536^13475+13475^26536109582Hans Havermann11/2020
69002^363842-2787101109528Enzo Doria03/2016
6901(2^363812+3570)/2109519Stefano Morozzi09/2020
6902(996^36527+1)/997109515Jinyuan Wang12/2024
6903(22699*2^363782+1)/763109511Lelio R Paula07/2014
69042^363769+5711109506Lelio R Paula04/2017
6905(31*2^363748+1)/49109499Lelio R Paula03/2014
690626^77372+25109480Anonymous09/2024
6907(2^363670+100280245065)109476Paul Bourdelais05/2022
6908p(22245)#/2-8109462Robert Price01/2017
69092^363556+55109442Lelio R Paula01/2012
6910(509*10^109414+31)/9109416Robert Price08/2022
6911(2^363437+1682)/2109406Stefano Morozzi09/2020
6912(55459*2^363411+1)/81109401Lelio R Paula07/2014
69132^363406+1871569109397Enzo Doria05/2016
6914(129^51829-1)/128109388Anonymous06/2024
6915(2^363370+1338)/2109385Stefano Morozzi02/2021
6916(2^363349+7)/9109378Lelio R Paula01/2014
6917(13869^26569-1)/(13869^163-1)109375Ryan Propper11/2023
69183^229236+100109374Lelio R Paula03/2017
6919(2^363315+3258)/2109369Stefano Morozzi02/2021
69202^363268-58695109355Lelio R Paula04/2017
69212^363191-112321109332Enzo Doria06/2014
692226231^14718+14718^26231109327Hans Havermann10/2020
692325461^19672+19672^25461109326Hans Havermann10/2020
69244*10^109316-63109317Robert Price10/2018
69252^363120+3109311Donovan Johnson04/2006
6926(10^109297-1)/9109297Paul Bourdelais, Harvey Dubner04/2007
69272^363042-114641109287Enzo Doria04/2015
69282^363020-112793109280Enzo Doria06/2014
6929(8732^27889-1)/(8732^167-1)109256Ryan Propper11/2023
6930(85*10^109253+203)/9109254Robert Price09/2020
693124990^23431+23431^24990109202Hans Havermann10/2020
6932(2^362746+3738)/2109198Stefano Morozzi09/2020
6933(2^362716+1282)/2109189Stefano Morozzi01/2021
6934(67607*2^362695+1)/70499109183Lelio R Paula07/2014
693525060^22737+22737^25060109180Hans Havermann10/2020
6936(9*2^362644+1)/5109167Lelio R Paula03/2014
69375^156181+38109166Lelio R Paula02/2017
6938(2^362623+3618)/2109161Stefano Morozzi09/2020
693925138^21993+21993^25138109157Hans Havermann10/2020
69404*10^109142+91109143Robert Price08/2018
69413^228750+68109142Lelio R Paula03/2017
6942(2^362561+786)/2109142Stefano Morozzi09/2020
6943(23*10^109113+61)/3109114Robert Price01/2022
69442*10^109100-49109101Robert Price09/2020
6945(10223*2^362376+1)/9109090Lelio R Paula07/2014
694665^60167-64^60167109078Robert Price08/2013
69477*3^228589-2109066Lelio R Paula09/2014
694824874^24243+24243^24874109063Hans Havermann11/2020
6949(17*10^109059-161)/9109060Robert Price02/2021
695029158^5495+5495^29158109050Hans Havermann11/2020
6951(78557*2^362188+1)/189109033Lelio R Paula07/2014
69522*7^129008+9109025Lelio R Paula11/2014
695388*10^109022+7109024Robert Price03/2020
695428194^7337+7337^28194108985Hans Havermann10/2020
6955(5*10^108960+91)/3108961Robert Price04/2018
69562^361957+76367108960Enzo Doria05/2016
69572^361873-1411108935Yves Minet01/2013
6958(24737*2^361857+1)/35108933Lelio R Paula07/2014
6959216^216^216+91^91^91108917Henri Lifchitz03/2025
696047^65132-65132^47108908Norman Luhn09/2024
6961115^52842-114108892Norbert Schneider07/2018
696213^97745-24108883Lelio R Paula03/2017
6963(2^361696+2562)/2108882Stefano Morozzi09/2020
696417^88475+8108864Lelio R Paula04/2017
69652^361567+51108843Lelio R Paula01/2012
69662^361563-109501108842Enzo Doria04/2014
696712^100852+83108838Lelio R Paula03/2017
69682^361497+767108822Lelio R Paula01/2012
6969L(520691)/78103651/1057002731/42794551909108791Serge Batalov07/2024
697028019^7630+7630^28019108785Hans Havermann10/2020
697124723^24758-24758^24723108765Norbert Schneider11/2020
69722^361280-112349108757Enzo Doria06/2014
69732^361271-5955108754Lelio R Paula04/2017
697412^100757+19108736Lelio R Paula03/2017
697525368^19333+19333^25368108735Hans Havermann11/2020
6976(2^361195+3618)/2108731Stefano Morozzi09/2020
69772^361153-111546435108718Paul Bourdelais10/2021
697814^94849-61108710Lelio R Paula05/2017
697927267^9700+9700^27267108708Hans Havermann11/2020
6980(19^85009-5^85009)/14108705Robert Price07/2013
698124832^23853+23853^24832108704Hans Havermann11/2020
698227502^8963+8963^27502108701Hans Havermann11/2020
6983(130^51419-1)/129108695Anonymous06/2024
698425807^16278+16278^25807108689Hans Havermann11/2020
6985(11*2^361027+1)/40463108677Lelio R Paula03/2014
69862^360973+1299108664Lelio R Paula04/2017
698724^78728+23108662Anonymous09/2024
69882^360959-109101108660Enzo Doria04/2014
69896*5^155454+7108659Lelio R Paula11/2014
699010^108656+79108657Lelio R Paula02/2017
699110^108656-50001108656Patrick De Geest03/2017
69922^360918-35108648Lelio R Paula01/2012
69934*10^108646-47108647Robert Price10/2021
6994(11*2^360886-1)/7108638Lelio R Paula03/2014
69953*10^108624-49108625Robert Price07/2018
6996(2^360831+666)/2108621Stefano Morozzi09/2020
6997(134*10^108610+7)/3108612Robert Price02/2020
69982*10^108609+29108610Robert Price02/2021
6999(10^108604+7)/71/191108600Alfred Reich06/2021
7000(2^360742+3222)/2108594Stefano Morozzi09/2020


Find by discoverer :


Created by  Henri Lifchitz & Renaud Lifchitz : October, 26 2000, last modification: April, 24 2025 12:56 (Time in France)

Go back
Valid XHTML 1.0!    Valid CSS!