PRP Records

Probable Primes Top 10000

(302294 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) !!!


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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 ?
500137384^5065+5065^37384138492Hans Havermann05/2021
500228736^31055-31055^28736138457Frank Doornink05/2024
500334774^9585+9585^34774138456Hans Havermann05/2021
500410^138444-5001138444Robert Price12/2021
50052^459768+1531138404Lelio R Paula06/2012
5006(266*10^138328-17)/3138330Robert Price07/2020
500727200^31193-31193^27200138328Frank Doornink01/2024
50082024^41836+2025138319Henri Lifchitz01/2025
500928782^31019-31019^28782138318Frank Doornink05/2024
501032963^15696+15696^32963138306Hans Havermann05/2021
50112^459343-113611138277Enzo Doria08/2014
5012(28*10^138240+113)/3138241Robert Price03/2020
50132^459199+1874393138233Enzo Doria06/2016
501433339^14002+14002^33339138230Hans Havermann05/2021
501530137^30860-30860^30137138226Frank Doornink05/2024
50162^459063-345307138192Enzo Doria06/2015
50172*10^138162-43138163Robert Price04/2018
50182^458927-112747138151Enzo Doria06/2014
50192^458927-69217138151Enzo Doria11/2015
502030907^29458+29458^30907138130Hans Havermann05/2021
502132882^15837+15837^32882138094Hans Havermann05/2021
502239252^3295+3295^39252138083Hans Havermann05/2021
502333789^12190+12190^33789138062Hans Havermann06/2021
5024555555*2^458524+1513138036Darren Bedwell08/2009
502528095^31028-31028^28095138033Frank Doornink05/2024
502630931^29002+29002^30931138028Hans Havermann05/2021
50272^458465+2^32+1138012T. D. Noe06/2007
502832206^19275+19275^32206138003Hans Havermann05/2021
50292^458321-113053137969Enzo Doria07/2014
50306^177298+323137965Riley Fisher03/2023
50312^458298+79459137962Enzo Doria06/2016
503230254^30789-30789^30254137959Frank Doornink05/2024
50332^458248-21815137947Enzo Doria07/2013
50342^458194+1876549137931Enzo Doria07/2016
5035(318259#+325270)/(2^2*5*11*2957)137907Makoto Morimoto10/2017
5036(318259#+2625)/(3^2*5*7^5*22965193)137899Makoto Morimoto06/2019
5037(793*10^137887+53)/9137889Robert Price01/2022
50382^457937+57137853Lelio R Paula09/2017
503928714^30921-30921^28714137849Frank Doornink05/2024
5040(8*10^137845+13)/3137846Robert Price06/2018
50412^457822+105137819Donovan Johnson06/2006
50422^457754-113711137798Enzo Doria09/2014
504311^132315-360137792Enzo Doria09/2012
5044(2^659318)%L(659318)137787Henri Lifchitz05/2025
504532072^19689+19689^32072137725Hans Havermann06/2021
504626529^31132-31132^26529137720Frank Doornink03/2024
504744592^1225+1225^44592137707Hans Havermann05/2021
504828986^30857-30857^28986137690Frank Doornink05/2024
50492^457347-37137676Lelio R Paula09/2017
50502^457322-2786393137668Enzo Doria10/2015
5051gcd(Phi(699340,10),(10^34967+1)^3*(10^34967+1+10^17484)-(10^69934+10^34967)*(10^17484-1)+10^104901)137664Serge Batalov04/2015
5052Phi(699340M,10)137664Anonymous03/2025
505334015^11134+11134^34015137647Hans Havermann06/2021
50542^457240-59939137643Enzo Doria10/2015
5055(856*10^137633-1)/9137635Robert Price03/2020
505636232^6289+6289^36232137631Hans Havermann05/2021
50572^457120-21575137607Enzo Doria07/2013
5058(11*2^456978+1)/15137564Lelio R Paula07/2015
505930963^27722+27722^30963137564Hans Havermann04/2021
506033722^12003+12003^33722137562Hans Havermann06/2021
5061(7*25^98399+10613)/12137556Curtis Bright05/2015
506241901^1918+1918^41901137555Hans Havermann06/2021
5063(7*10^137551-1)/3137552Robert Price08/2022
506432930^15021+15021^32930137539Hans Havermann05/2021
506531178^25785+25785^31178137538Hans Havermann05/2021
5066419^52446+52446^419137525Norbert Schneider11/2020
50672^456813+214175137515Enzo Doria10/2023
50682^456796-113513137510Enzo Doria08/2014
506931788^21137+21137^31788137485Hans Havermann04/2021
5070(7*2^456655+1)/39137467Lelio R Paula07/2015
507127151^31004-31004^27151137466Frank Doornink01/2024
50722^456503-114361137422Enzo Doria01/2015
5073(11*2^456387+1)/19137386Lelio R Paula07/2015
507430618^30618-5^5137352Serge Batalov04/2024
507536248^6147+6147^36248137332Hans Havermann05/2021
507631986^19651+19651^31986137329Hans Havermann05/2021
50772^456167+22313137320Enzo Doria09/2023
507831817^20656+20656^31817137292Hans Havermann05/2021
5079(37^87559-1)/3966428818030710150468137289Paul Vanderveen06/2025
5080(71*10^137250+1)/9137251Serge Batalov05/2010
50812^455922+76249137247Enzo Doria05/2016
508231310^24171+24171^31310137241Hans Havermann05/2021
508314^119741-119741^14137239Serge Batalov04/2016
508435014^8297+8297^35014137218Hans Havermann05/2021
5085(19*2^455760+1)/3455137196Lelio R Paula07/2015
5087124^(2^16)+57^(2^16)137195Valeryi Kuryshev02/2011
5086124^65536+57^65536137195Serge Batalov03/2018
50882^455689+72677137177Enzo Doria04/2016
5089(17948!)^2+Prime(17948)137118Robert Price08/2014
509031287^24128+24128^31287137116Hans Havermann05/2021
5091(37^87421-1)/36137093Robert Price03/2012
509236233^6070+6070^36233137077Hans Havermann05/2021
5093(8*10^137073-17)/9137073Serge Batalov11/2022
509438418^3697+3697^38418137070Hans Havermann04/2021
50952^455323-57137066Lelio R Paula09/2017
5096(56*10^137019+583)/9137020Robert Price08/2021
509725017^31148-31148^25017136997Frank Doornink12/2023
5098(73*17^111333-9)/16136991Curtis Bright05/2015
50992^455025-112723136977Enzo Doria06/2014
510033876^11039+11039^33876136959Hans Havermann05/2021
5101(19860^32041-1)/(19860^179-1)136943Ryan Propper11/2023
5102(251^57059-1)/250136921Anonymous04/2024
510335142^7873+7873^35142136919Hans Havermann05/2021
5104(4997*31^91805-1)/2136918Eric Chen05/2024
510566*10^136894+7136896Robert Price07/2020
510628766^30697-30697^28766136875Frank Doornink05/2024
51072^454675-1777136871Yves Minet10/2011
510831676^20931+20931^31676136866Hans Havermann05/2021
51093*10^136829+29136830Robert Price05/2018
51104*10^136813-57136814Robert Price10/2018
5111(6092*28^94536-143)/9136812Curtis Bright05/2015
5112fibonacci(654572)-2136798Jon Grantham08/2023
511337359^4588+4588^37359136795Hans Havermann05/2021
51142^454348-53136773Lelio R Paula09/2017
511531^91680-2136729Lelio R Paula05/2017
51162^454199-113697136728Enzo Doria09/2014
511730785^27622+27622^30785136725Hans Havermann05/2021
511832973^14014+14014^32973136725Hans Havermann05/2021
51207*10^136716+69136717Robert Price07/2019
511936002^6273+6273^36002136717Hans Havermann05/2021
51216*10^136692+53136693Robert Price05/2020
5122(13*10^136687+47)/3136688Robert Price10/2018
5123F(2*453976)%(2^453976)136661Henri Lifchitz06/2025
51242^453935-2791357136649Enzo Doria01/2016
51252^453906-69131136640Enzo Doria11/2015
512633232^12915+12915^33232136620Hans Havermann05/2021
51272^453791+1873913136605Enzo Doria06/2016
512834166^9951+9951^34166136592Hans Havermann05/2021
5129(21*2^453740-1)/2735136588Lelio R Paula07/2015
513031102^24635+24635^31102136587Hans Havermann05/2021
5131580^49413+49413^580136550Norbert Schneider02/2019
51322^453503-2788297136519Enzo Doria11/2015
513334989^7958+7958^34989136486Hans Havermann12/2020
5134(2*10^136484+187)/9136484Robert Price06/2022
5135(5^653025)%L(653025)136475Henri Lifchitz06/2025
513631007^25158+25158^31007136452Hans Havermann11/2020
51372^453267-113827136447Enzo Doria09/2014
513832234^17085+17085^32234136435Hans Havermann12/2020
51392^453102+1877629136398Enzo Doria08/2016
514031016^24981+24981^31016136397Hans Havermann12/2020
5141(62*10^136384-791)/9136385Robert Price06/2019
514234171^9798+9798^34171136382Hans Havermann12/2020
5143(17*10^136354-113)/3136355Robert Price06/2021
514432756^14541+14541^32756136350Hans Havermann11/2020
514532205^17086+17086^32205136313Hans Havermann12/2020
5146(25*10^136303+161)/3136304Robert Price09/2019
514735337^7196+7196^35337136299Hans Havermann12/2020
5148(182*10^136291+1)/3136293Robert Price02/2020
5149(88*10^136234+83)/9136235Robert Price03/2022
515023*10^136225-7136227Robert Price02/2020
5151L(651821)136223Henri Lifchitz09/2008
515225519^30908-30908^25519136208Frank Doornink02/2024
51532^452460+77701136205Enzo Doria05/2016
51542^452440-114755136199Enzo Doria04/2015
515528625^30558-30558^28625136190Frank Doornink05/2024
515632286^16489+16489^32286136157Hans Havermann11/2020
5157(47*10^136141+493)/9136142Robert Price03/2019
515827140^30699-30699^27140136108Frank Doornink01/2024
5159Phi(199391,-5)136098Henri Lifchitz12/2025
516040392^2339+2339^40392136082Hans Havermann12/2020
51612*10^136057-43136058Robert Price04/2018
51622^451971+21563136057Enzo Doria08/2023
5163(2^451956-5)/181136051Lelio R Paula07/2015
51642^451947-22165136050Enzo Doria07/2013
5165(3^451810)%(2^451810)136008Henri Lifchitz06/2025
51662^451787-21805136002Enzo Doria07/2013
51672^451734-112817135986Enzo Doria06/2014
5168(11*2^451714+1)/75135979Lelio R Paula07/2015
51692^451705-21879135977Enzo Doria07/2013
5170(4666^37249-1)/(4666^193-1)135957Ryan Propper11/2023
51712^451560-112349135934Enzo Doria06/2014
51722^451530+45135925Lelio R Paula08/2017
517326594^30719-30719^26594135925Frank Doornink03/2024
517431622^19875+19875^31622135922Hans Havermann11/2020
5175(25*10^135906-73)/3135907Robert Price09/2019
51762^451450-21743135900Enzo Doria07/2013
5177(7*10^135879+11)/9135879Tyler Busby01/2023
517835218^7199+7199^35218135846Hans Havermann11/2020
517935661^6446+6446^35661135844Hans Havermann11/2020
5180(7*33^89453-4743239)/32135835Eric Chen12/2023
518131869^18248+18248^31869135801Hans Havermann12/2020
5182(77*10^135789+157)/9135790Robert Price05/2022
5183Phi(286219,-3)135763Henri Lifchitz12/2025
51842^450958+60529135752Enzo Doria08/2023
51852^450805+65135706Lelio R Paula08/2017
518610^135669+21135670Boyan Hu12/2024
518730761^25728+25728^30761135669Hans Havermann12/2020
51882*10^135663+69135664Robert Price06/2020
518933962^9867+9867^33962135651Hans Havermann11/2020
519034474^8605+8605^34474135647Hans Havermann11/2020
519134501^8508+8508^34501135583Hans Havermann12/2020
519235487^6614+6614^35487135577Hans Havermann12/2020
5193(13725^32768+1)/131074135573Lelio R Paula03/2012
5194(313007#+121876)/(2*30469*424867)135559Makoto Morimoto08/2020
5196(5^193939+1)/6135557Paul Bourdelais12/2008
5195Phi(193939,-5)135557Henri Lifchitz12/2025
5197(76*10^135553-49)/9135554Robert Price07/2022
51985*3^284077+2^284077135540Jon Grantham08/2023
5199(844*10^135527-7)/9135529Robert Price05/2021
520027191^30560-30560^27191135517Frank Doornink01/2024
520140387^2260+2260^40387135463Hans Havermann12/2020
52022^449944-113247135447Enzo Doria07/2014
5203Phi(70509,-1105)135418Henri Lifchitz12/2025
52042^449770-113247135395Enzo Doria07/2014
52052^449637-21471135355Enzo Doria07/2013
520626061^30650-30650^26061135351Frank Doornink03/2024
52072^449571-75135335Lelio R Paula08/2017
5208(14*10^135301-53)/3135302Robert Price12/2018
5209(3*2^449494+1)/61340334013135301Lelio R Paula07/2015
5210(13*10^135279+437)/9135280Robert Price04/2018
52112^449330-35135262Lelio R Paula08/2017
5212(19*2^449325+1)/9135261Lelio R Paula07/2015
5213(2709^39601+1)/(2709^199+1)135260Martin Hopf12/2023
5214(13*10^135184-43)/3135185Robert Price11/2018
52152^449049-115309135178Enzo Doria07/2015
5216(10^135174+191)/3135174Robert Price02/2018
52172^449030-15135172Lelio R Paula08/2017
5218(157*10^135151-1)/3135153Robert Price01/2022
5219(2^448966+100280245065)135153Paul Bourdelais05/2022
5220(27*2^448936-1)/11135144Lelio R Paula07/2015
5221(37*10^135099+251)/9135100Robert Price09/2021
522232221^15586+15586^32221135095Hans Havermann12/2020
52232^448762-351401135091Enzo Doria07/2015
52242*10^135083-43135084Robert Price04/2018
522531357^20278+20278^31357135056Hans Havermann12/2020
522632242^15445+15445^32242135055Hans Havermann12/2020
5227k(198476)135054Robert Price07/2020
522832461^14470+14470^32461135053Hans Havermann12/2020
522931353^20288+20288^31353135045Hans Havermann12/2020
52305*10^135019+77135020Robert Price12/2018
5231(10^135011+719)/9135011Serge Batalov12/2014
5232(197*10^134978+7)/3134980Robert Price12/2020
52332^448386-2786261134978Enzo Doria03/2016
523426480^30517-30517^26480134975Frank Doornink03/2024
5235(73*10^134939+143)/9134940Robert Price07/2019
523633957^9392+9392^33957134903Hans Havermann12/2020
52372^448122+20809134899Enzo Doria08/2023
52382^448113-113949134896Enzo Doria11/2014
523930958^22755+22755^30958134887Hans Havermann12/2020
52402^447888-2786639134828Enzo Doria03/2016
52412^447870-396765134823Enzo Doria07/2013
524210^(2*67404+1)-10^67404-1134809Robert Price07/2023
52432^447766-21791134791Enzo Doria07/2013
5244(19*10^134786-49)/3134787Robert Price05/2019
5245Phi(202173,10)/10064306514895399941409134758Makoto Kamada05/2019
5246(23*2^447647+1)/155134755Lelio R Paula07/2015
52472^447552-1019134727Yves Minet02/2014
5248(2*10^134720-41)/3134720Robert Price02/2018
5249(25*10^134695-97)/9134696Robert Price01/2022
52502^447437-113569134692Enzo Doria08/2014


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Created by  Henri Lifchitz & Renaud Lifchitz : October, 26 2000, last modification: January, 05 2026 14:32 (Time in France)

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