PRP Records

Probable Primes Top 10000

(302601 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 ?
50012^463019+79463139383Enzo Doria06/2016
50023^292129-112756139381Enzo Doria07/2014
5003(15*2^462951+1)/527139361Lelio R Paula08/2015
500431922^23205+23205^31922139359Hans Havermann05/2021
5005(19*10^139336+503)/9139337Alfred Reich11/2023
50072^462855-1865707139334Enzo Doria02/2016
500631237^28876+28876^31237139334Hans Havermann05/2021
5008(86*10^139315+121)/9139316Robert Price08/2019
50092^462786-292043139313Enzo Doria08/2015
501038915^3798+3798^38915139299Hans Havermann05/2021
5012(26*10^139289+1)/9139290Serge Batalov05/2010
5011(17*10^139289+7)/3139290Robert Price06/2023
501334065^12248+12248^34065139260Hans Havermann05/2021
501436425^6654+6654^36425139256Hans Havermann05/2021
501539252^3527+3527^39252139243Hans Havermann05/2021
5016(17*10^139239+67)/3139240Robert Price01/2019
501731887^23248+23248^31887139231Hans Havermann05/2021
5018(25*10^139210-97)/9139211Robert Price01/2022
50192^462238-935139148Yves Minet02/2014
5020(29*10^139134-119)/9139135Robert Price12/2021
5021U(687859)/4127153139105Serge Batalov07/2024
5022(109*10^139100-7)/3139102Robert Price03/2021
502338744^3885+3885^38744139068Hans Havermann05/2021
502431112^29499+29499^31112139065Hans Havermann05/2021
50252*10^139043-63139044Robert Price01/2022
502636390^6613+6613^36390139025Hans Havermann04/2021
502730554^30989-30989^30554138988Frank Doornink05/2024
50282*10^138975+33138976Robert Price11/2021
502942437^1882+1882^42437138966Hans Havermann05/2021
503032151^20990+20990^32151138958Hans Havermann05/2021
503132154^20933+20933^32154138933Hans Havermann04/2021
503231082^29499+29499^31082138931Hans Havermann04/2021
503330573^30962-30962^30573138876Frank Doornink05/2024
50342^461228+1870441138844Enzo Doria05/2016
50352^461204-113675138837Enzo Doria08/2014
5036(397227*29^94935-19)/28138837Eric Chen06/2025
5037(2^461139-7)/47138815Lelio R Paula08/2015
5038(17*10^138812-521)/9138813Robert Price04/2018
50393*10^138811-11138812Robert Price07/2018
504029109^31088-31088^29109138778Frank Doornink05/2024
5041(28*10^138768+173)/3138769Robert Price12/2019
5042(17*2^460963+1)/124051613138757Lelio R Paula08/2015
5043(379*10^138737-1)/9138739Robert Price02/2020
5044(43*10^138648+101)/9138649Robert Price11/2018
50452^460567-113541138645Enzo Doria08/2014
50462^460539+224789138637Enzo Doria07/2024
5047(10^138622+161)/9138622Robert Price09/2021
50487*10^138604+3138605Robert Price08/2015
5049(133*10^138600+17)/3138602Robert Price11/2021
505033912^12203+12203^33912138581Hans Havermann05/2021
50512^460330+69138574Lelio R Paula09/2017
5052(17*10^138569-77)/3138570Robert Price08/2019
505331186^27725+27725^31186138556Hans Havermann05/2021
5054(41^85909-3^85909)/38138552Robert Price09/2025
5055(16*10^138545+89)/3138546Robert Price03/2021
505639753^3056+3056^39753138546Hans Havermann05/2021
505731282^26847+26847^31282138545Hans Havermann05/2021
50586*10^138520-37138521Robert Price02/2021
50612^460078-69581138498Enzo Doria12/2015
505931830^22447+22447^31830138498Hans Havermann05/2021
5060Phi(237987,2^3)138498Henri Lifchitz12/2025
506237384^5065+5065^37384138492Hans Havermann05/2021
506328736^31055-31055^28736138457Frank Doornink05/2024
506434774^9585+9585^34774138456Hans Havermann05/2021
506510^138444-5001138444Robert Price12/2021
50662^459768+1531138404Lelio R Paula06/2012
5067(266*10^138328-17)/3138330Robert Price07/2020
506827200^31193-31193^27200138328Frank Doornink01/2024
50692024^41836+2025138319Henri Lifchitz01/2025
507028782^31019-31019^28782138318Frank Doornink05/2024
507132963^15696+15696^32963138306Hans Havermann05/2021
50722^459343-113611138277Enzo Doria08/2014
5073(28*10^138240+113)/3138241Robert Price03/2020
50742^459199+1874393138233Enzo Doria06/2016
507533339^14002+14002^33339138230Hans Havermann05/2021
507630137^30860-30860^30137138226Frank Doornink05/2024
50772^459063-345307138192Enzo Doria06/2015
50782*10^138162-43138163Robert Price04/2018
50792^458927-112747138151Enzo Doria06/2014
50802^458927-69217138151Enzo Doria11/2015
508130907^29458+29458^30907138130Hans Havermann05/2021
508232882^15837+15837^32882138094Hans Havermann05/2021
508339252^3295+3295^39252138083Hans Havermann05/2021
508433789^12190+12190^33789138062Hans Havermann06/2021
5085555555*2^458524+1513138036Darren Bedwell08/2009
508628095^31028-31028^28095138033Frank Doornink05/2024
508730931^29002+29002^30931138028Hans Havermann05/2021
50882^458465+2^32+1138012T. D. Noe06/2007
508932206^19275+19275^32206138003Hans Havermann05/2021
50902^458321-113053137969Enzo Doria07/2014
50916^177298+323137965Riley Fisher03/2023
50922^458298+79459137962Enzo Doria06/2016
509330254^30789-30789^30254137959Frank Doornink05/2024
50942^458248-21815137947Enzo Doria07/2013
50952^458194+1876549137931Enzo Doria07/2016
5096(318259#+325270)/(2^2*5*11*2957)137907Makoto Morimoto10/2017
5097(318259#+2625)/(3^2*5*7^5*22965193)137899Makoto Morimoto06/2019
5098(793*10^137887+53)/9137889Robert Price01/2022
50992^457937+57137853Lelio R Paula09/2017
510028714^30921-30921^28714137849Frank Doornink05/2024
5101(8*10^137845+13)/3137846Robert Price06/2018
51022^457822+105137819Donovan Johnson06/2006
51032^457754-113711137798Enzo Doria09/2014
510411^132315-360137792Enzo Doria09/2012
5105(2^659318)%L(659318)137787Henri Lifchitz05/2025
510632072^19689+19689^32072137725Hans Havermann06/2021
510726529^31132-31132^26529137720Frank Doornink03/2024
510844592^1225+1225^44592137707Hans Havermann05/2021
510928986^30857-30857^28986137690Frank Doornink05/2024
51102^457347-37137676Lelio R Paula09/2017
51112^457322-2786393137668Enzo Doria10/2015
5112gcd(Phi(699340,10),(10^34967+1)^3*(10^34967+1+10^17484)-(10^69934+10^34967)*(10^17484-1)+10^104901)137664Serge Batalov04/2015
5113Phi(699340M,10)137664Anonymous03/2025
511434015^11134+11134^34015137647Hans Havermann06/2021
51152^457240-59939137643Enzo Doria10/2015
5116(856*10^137633-1)/9137635Robert Price03/2020
511736232^6289+6289^36232137631Hans Havermann05/2021
51182^457120-21575137607Enzo Doria07/2013
5119(11*2^456978+1)/15137564Lelio R Paula07/2015
512030963^27722+27722^30963137564Hans Havermann04/2021
512133722^12003+12003^33722137562Hans Havermann06/2021
5122(7*25^98399+10613)/12137556Curtis Bright05/2015
512341901^1918+1918^41901137555Hans Havermann06/2021
5124(7*10^137551-1)/3137552Robert Price08/2022
512532930^15021+15021^32930137539Hans Havermann05/2021
512631178^25785+25785^31178137538Hans Havermann05/2021
5127419^52446+52446^419137525Norbert Schneider11/2020
51282^456813+214175137515Enzo Doria10/2023
51292^456796-113513137510Enzo Doria08/2014
513031788^21137+21137^31788137485Hans Havermann04/2021
5131(7*2^456655+1)/39137467Lelio R Paula07/2015
513227151^31004-31004^27151137466Frank Doornink01/2024
51332^456503-114361137422Enzo Doria01/2015
5134(11*2^456387+1)/19137386Lelio R Paula07/2015
513530618^30618-5^5137352Serge Batalov04/2024
513636248^6147+6147^36248137332Hans Havermann05/2021
513731986^19651+19651^31986137329Hans Havermann05/2021
51382^456167+22313137320Enzo Doria09/2023
513931817^20656+20656^31817137292Hans Havermann05/2021
5140(37^87559-1)/3966428818030710150468137289Paul Vanderveen06/2025
5141(71*10^137250+1)/9137251Serge Batalov05/2010
51422^455922+76249137247Enzo Doria05/2016
514331310^24171+24171^31310137241Hans Havermann05/2021
514414^119741-119741^14137239Serge Batalov04/2016
514535014^8297+8297^35014137218Hans Havermann05/2021
5146(19*2^455760+1)/3455137196Lelio R Paula07/2015
5148124^(2^16)+57^(2^16)137195Valeryi Kuryshev02/2011
5147124^65536+57^65536137195Serge Batalov03/2018
51492^455689+72677137177Enzo Doria04/2016
5150(17948!)^2+Prime(17948)137118Robert Price08/2014
515131287^24128+24128^31287137116Hans Havermann05/2021
5152(37^87421-1)/36137093Robert Price03/2012
515336233^6070+6070^36233137077Hans Havermann05/2021
5154(8*10^137073-17)/9137073Serge Batalov11/2022
515538418^3697+3697^38418137070Hans Havermann04/2021
51562^455323-57137066Lelio R Paula09/2017
5157(56*10^137019+583)/9137020Robert Price08/2021
515825017^31148-31148^25017136997Frank Doornink12/2023
5159(73*17^111333-9)/16136991Curtis Bright05/2015
51602^455025-112723136977Enzo Doria06/2014
516133876^11039+11039^33876136959Hans Havermann05/2021
5162(19860^32041-1)/(19860^179-1)136943Ryan Propper11/2023
5163(251^57059-1)/250136921Anonymous04/2024
516435142^7873+7873^35142136919Hans Havermann05/2021
5165(4997*31^91805-1)/2136918Eric Chen05/2024
516666*10^136894+7136896Robert Price07/2020
516728766^30697-30697^28766136875Frank Doornink05/2024
51682^454675-1777136871Yves Minet10/2011
516931676^20931+20931^31676136866Hans Havermann05/2021
51703*10^136829+29136830Robert Price05/2018
51714*10^136813-57136814Robert Price10/2018
5172(6092*28^94536-143)/9136812Curtis Bright05/2015
5173fibonacci(654572)-2136798Jon Grantham08/2023
517437359^4588+4588^37359136795Hans Havermann05/2021
51752^454348-53136773Lelio R Paula09/2017
517631^91680-2136729Lelio R Paula05/2017
51772^454199-113697136728Enzo Doria09/2014
517830785^27622+27622^30785136725Hans Havermann05/2021
517932973^14014+14014^32973136725Hans Havermann05/2021
51817*10^136716+69136717Robert Price07/2019
518036002^6273+6273^36002136717Hans Havermann05/2021
51826*10^136692+53136693Robert Price05/2020
5183Phi(568997,2)136692Henri Lifchitz02/2026
5184(13*10^136687+47)/3136688Robert Price10/2018
5185F(2*453976)%(2^453976)136661Henri Lifchitz06/2025
51862^453935-2791357136649Enzo Doria01/2016
51872^453906-69131136640Enzo Doria11/2015
518833232^12915+12915^33232136620Hans Havermann05/2021
51892^453791+1873913136605Enzo Doria06/2016
519034166^9951+9951^34166136592Hans Havermann05/2021
5191(21*2^453740-1)/2735136588Lelio R Paula07/2015
519231102^24635+24635^31102136587Hans Havermann05/2021
5193580^49413+49413^580136550Norbert Schneider02/2019
51942^453503-2788297136519Enzo Doria11/2015
519534989^7958+7958^34989136486Hans Havermann12/2020
5196(2*10^136484+187)/9136484Robert Price06/2022
5197(5^653025)%L(653025)136475Henri Lifchitz06/2025
519831007^25158+25158^31007136452Hans Havermann11/2020
51992^453267-113827136447Enzo Doria09/2014
520032234^17085+17085^32234136435Hans Havermann12/2020
52012^453102+1877629136398Enzo Doria08/2016
520231016^24981+24981^31016136397Hans Havermann12/2020
5203(62*10^136384-791)/9136385Robert Price06/2019
520434171^9798+9798^34171136382Hans Havermann12/2020
5205(17*10^136354-113)/3136355Robert Price06/2021
520632756^14541+14541^32756136350Hans Havermann11/2020
520732205^17086+17086^32205136313Hans Havermann12/2020
5208(25*10^136303+161)/3136304Robert Price09/2019
520935337^7196+7196^35337136299Hans Havermann12/2020
5210(182*10^136291+1)/3136293Robert Price02/2020
5211(88*10^136234+83)/9136235Robert Price03/2022
521223*10^136225-7136227Robert Price02/2020
5213L(651821)136223Henri Lifchitz09/2008
521425519^30908-30908^25519136208Frank Doornink02/2024
52152^452460+77701136205Enzo Doria05/2016
52162^452440-114755136199Enzo Doria04/2015
521728625^30558-30558^28625136190Frank Doornink05/2024
521832286^16489+16489^32286136157Hans Havermann11/2020
5219(47*10^136141+493)/9136142Robert Price03/2019
522027140^30699-30699^27140136108Frank Doornink01/2024
5221Phi(199391,-5)136098Henri Lifchitz12/2025
522240392^2339+2339^40392136082Hans Havermann12/2020
52232*10^136057-43136058Robert Price04/2018
52242^451971+21563136057Enzo Doria08/2023
5225(2^451956-5)/181136051Lelio R Paula07/2015
52262^451947-22165136050Enzo Doria07/2013
5227(3^451810)%(2^451810)136008Henri Lifchitz06/2025
52282^451787-21805136002Enzo Doria07/2013
52292^451734-112817135986Enzo Doria06/2014
5230(11*2^451714+1)/75135979Lelio R Paula07/2015
52312^451705-21879135977Enzo Doria07/2013
5232(4666^37249-1)/(4666^193-1)135957Ryan Propper11/2023
52332^451560-112349135934Enzo Doria06/2014
52342^451530+45135925Lelio R Paula08/2017
523526594^30719-30719^26594135925Frank Doornink03/2024
523631622^19875+19875^31622135922Hans Havermann11/2020
5237(25*10^135906-73)/3135907Robert Price09/2019
52382^451450-21743135900Enzo Doria07/2013
5239(7*10^135879+11)/9135879Tyler Busby01/2023
524035218^7199+7199^35218135846Hans Havermann11/2020
524135661^6446+6446^35661135844Hans Havermann11/2020
5242(7*33^89453-4743239)/32135835Eric Chen12/2023
524331869^18248+18248^31869135801Hans Havermann12/2020
5244(77*10^135789+157)/9135790Robert Price05/2022
5245Phi(286219,-3)135763Henri Lifchitz12/2025
52462^450958+60529135752Enzo Doria08/2023
52472^450805+65135706Lelio R Paula08/2017
524810^135669+21135670Boyan Hu12/2024
524930761^25728+25728^30761135669Hans Havermann12/2020
52502*10^135663+69135664Robert Price06/2020


Find by discoverer :


Created by  Henri Lifchitz & Renaud Lifchitz : October, 26 2000, last modification: March, 01 2026 13:21 (Time in France)

Go back
Valid XHTML 1.0!    Valid CSS!