PRP Records

Probable Primes Top 10000

(302288 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 ?
500134774^9585+9585^34774138456Hans Havermann05/2021
500210^138444-5001138444Robert Price12/2021
50032^459768+1531138404Lelio R Paula06/2012
5004(266*10^138328-17)/3138330Robert Price07/2020
500527200^31193-31193^27200138328Frank Doornink01/2024
50062024^41836+2025138319Henri Lifchitz01/2025
500728782^31019-31019^28782138318Frank Doornink05/2024
500832963^15696+15696^32963138306Hans Havermann05/2021
50092^459343-113611138277Enzo Doria08/2014
5010(28*10^138240+113)/3138241Robert Price03/2020
50112^459199+1874393138233Enzo Doria06/2016
501233339^14002+14002^33339138230Hans Havermann05/2021
501330137^30860-30860^30137138226Frank Doornink05/2024
50142^459063-345307138192Enzo Doria06/2015
50152*10^138162-43138163Robert Price04/2018
50162^458927-112747138151Enzo Doria06/2014
50172^458927-69217138151Enzo Doria11/2015
501830907^29458+29458^30907138130Hans Havermann05/2021
501932882^15837+15837^32882138094Hans Havermann05/2021
502039252^3295+3295^39252138083Hans Havermann05/2021
502133789^12190+12190^33789138062Hans Havermann06/2021
5022555555*2^458524+1513138036Darren Bedwell08/2009
502328095^31028-31028^28095138033Frank Doornink05/2024
502430931^29002+29002^30931138028Hans Havermann05/2021
50252^458465+2^32+1138012T. D. Noe06/2007
502632206^19275+19275^32206138003Hans Havermann05/2021
50272^458321-113053137969Enzo Doria07/2014
50286^177298+323137965Riley Fisher03/2023
50292^458298+79459137962Enzo Doria06/2016
503030254^30789-30789^30254137959Frank Doornink05/2024
50312^458248-21815137947Enzo Doria07/2013
50322^458194+1876549137931Enzo Doria07/2016
5033(318259#+325270)/(2^2*5*11*2957)137907Makoto Morimoto10/2017
5034(318259#+2625)/(3^2*5*7^5*22965193)137899Makoto Morimoto06/2019
5035(793*10^137887+53)/9137889Robert Price01/2022
50362^457937+57137853Lelio R Paula09/2017
503728714^30921-30921^28714137849Frank Doornink05/2024
5038(8*10^137845+13)/3137846Robert Price06/2018
50392^457822+105137819Donovan Johnson06/2006
50402^457754-113711137798Enzo Doria09/2014
504111^132315-360137792Enzo Doria09/2012
5042(2^659318)%L(659318)137787Henri Lifchitz05/2025
504332072^19689+19689^32072137725Hans Havermann06/2021
504426529^31132-31132^26529137720Frank Doornink03/2024
504544592^1225+1225^44592137707Hans Havermann05/2021
504628986^30857-30857^28986137690Frank Doornink05/2024
50472^457347-37137676Lelio R Paula09/2017
50482^457322-2786393137668Enzo Doria10/2015
5049gcd(Phi(699340,10),(10^34967+1)^3*(10^34967+1+10^17484)-(10^69934+10^34967)*(10^17484-1)+10^104901)137664Serge Batalov04/2015
5050Phi(699340M,10)137664Anonymous03/2025
505134015^11134+11134^34015137647Hans Havermann06/2021
50522^457240-59939137643Enzo Doria10/2015
5053(856*10^137633-1)/9137635Robert Price03/2020
505436232^6289+6289^36232137631Hans Havermann05/2021
50552^457120-21575137607Enzo Doria07/2013
5056(11*2^456978+1)/15137564Lelio R Paula07/2015
505730963^27722+27722^30963137564Hans Havermann04/2021
505833722^12003+12003^33722137562Hans Havermann06/2021
5059(7*25^98399+10613)/12137556Curtis Bright05/2015
506041901^1918+1918^41901137555Hans Havermann06/2021
5061(7*10^137551-1)/3137552Robert Price08/2022
506232930^15021+15021^32930137539Hans Havermann05/2021
506331178^25785+25785^31178137538Hans Havermann05/2021
5064419^52446+52446^419137525Norbert Schneider11/2020
50652^456813+214175137515Enzo Doria10/2023
50662^456796-113513137510Enzo Doria08/2014
506731788^21137+21137^31788137485Hans Havermann04/2021
5068(7*2^456655+1)/39137467Lelio R Paula07/2015
506927151^31004-31004^27151137466Frank Doornink01/2024
50702^456503-114361137422Enzo Doria01/2015
5071(11*2^456387+1)/19137386Lelio R Paula07/2015
507230618^30618-5^5137352Serge Batalov04/2024
507336248^6147+6147^36248137332Hans Havermann05/2021
507431986^19651+19651^31986137329Hans Havermann05/2021
50752^456167+22313137320Enzo Doria09/2023
507631817^20656+20656^31817137292Hans Havermann05/2021
5077(37^87559-1)/3966428818030710150468137289Paul Vanderveen06/2025
5078(71*10^137250+1)/9137251Serge Batalov05/2010
50792^455922+76249137247Enzo Doria05/2016
508031310^24171+24171^31310137241Hans Havermann05/2021
508114^119741-119741^14137239Serge Batalov04/2016
508235014^8297+8297^35014137218Hans Havermann05/2021
5083(19*2^455760+1)/3455137196Lelio R Paula07/2015
5085124^(2^16)+57^(2^16)137195Valeryi Kuryshev02/2011
5084124^65536+57^65536137195Serge Batalov03/2018
50862^455689+72677137177Enzo Doria04/2016
5087(17948!)^2+Prime(17948)137118Robert Price08/2014
508831287^24128+24128^31287137116Hans Havermann05/2021
5089(37^87421-1)/36137093Robert Price03/2012
509036233^6070+6070^36233137077Hans Havermann05/2021
5091(8*10^137073-17)/9137073Serge Batalov11/2022
509238418^3697+3697^38418137070Hans Havermann04/2021
50932^455323-57137066Lelio R Paula09/2017
5094(56*10^137019+583)/9137020Robert Price08/2021
509525017^31148-31148^25017136997Frank Doornink12/2023
5096(73*17^111333-9)/16136991Curtis Bright05/2015
50972^455025-112723136977Enzo Doria06/2014
509833876^11039+11039^33876136959Hans Havermann05/2021
5099(19860^32041-1)/(19860^179-1)136943Ryan Propper11/2023
5100(251^57059-1)/250136921Anonymous04/2024
510135142^7873+7873^35142136919Hans Havermann05/2021
5102(4997*31^91805-1)/2136918Eric Chen05/2024
510366*10^136894+7136896Robert Price07/2020
510428766^30697-30697^28766136875Frank Doornink05/2024
51052^454675-1777136871Yves Minet10/2011
510631676^20931+20931^31676136866Hans Havermann05/2021
51073*10^136829+29136830Robert Price05/2018
51084*10^136813-57136814Robert Price10/2018
5109(6092*28^94536-143)/9136812Curtis Bright05/2015
5110fibonacci(654572)-2136798Jon Grantham08/2023
511137359^4588+4588^37359136795Hans Havermann05/2021
51122^454348-53136773Lelio R Paula09/2017
511331^91680-2136729Lelio R Paula05/2017
51142^454199-113697136728Enzo Doria09/2014
511530785^27622+27622^30785136725Hans Havermann05/2021
511632973^14014+14014^32973136725Hans Havermann05/2021
51187*10^136716+69136717Robert Price07/2019
511736002^6273+6273^36002136717Hans Havermann05/2021
51196*10^136692+53136693Robert Price05/2020
5120(13*10^136687+47)/3136688Robert Price10/2018
5121F(2*453976)%(2^453976)136661Henri Lifchitz06/2025
51222^453935-2791357136649Enzo Doria01/2016
51232^453906-69131136640Enzo Doria11/2015
512433232^12915+12915^33232136620Hans Havermann05/2021
51252^453791+1873913136605Enzo Doria06/2016
512634166^9951+9951^34166136592Hans Havermann05/2021
5127(21*2^453740-1)/2735136588Lelio R Paula07/2015
512831102^24635+24635^31102136587Hans Havermann05/2021
5129580^49413+49413^580136550Norbert Schneider02/2019
51302^453503-2788297136519Enzo Doria11/2015
513134989^7958+7958^34989136486Hans Havermann12/2020
5132(2*10^136484+187)/9136484Robert Price06/2022
5133(5^653025)%L(653025)136475Henri Lifchitz06/2025
513431007^25158+25158^31007136452Hans Havermann11/2020
51352^453267-113827136447Enzo Doria09/2014
513632234^17085+17085^32234136435Hans Havermann12/2020
51372^453102+1877629136398Enzo Doria08/2016
513831016^24981+24981^31016136397Hans Havermann12/2020
5139(62*10^136384-791)/9136385Robert Price06/2019
514034171^9798+9798^34171136382Hans Havermann12/2020
5141(17*10^136354-113)/3136355Robert Price06/2021
514232756^14541+14541^32756136350Hans Havermann11/2020
514332205^17086+17086^32205136313Hans Havermann12/2020
5144(25*10^136303+161)/3136304Robert Price09/2019
514535337^7196+7196^35337136299Hans Havermann12/2020
5146(182*10^136291+1)/3136293Robert Price02/2020
5147(88*10^136234+83)/9136235Robert Price03/2022
514823*10^136225-7136227Robert Price02/2020
5149L(651821)136223Henri Lifchitz09/2008
515025519^30908-30908^25519136208Frank Doornink02/2024
51512^452460+77701136205Enzo Doria05/2016
51522^452440-114755136199Enzo Doria04/2015
515328625^30558-30558^28625136190Frank Doornink05/2024
515432286^16489+16489^32286136157Hans Havermann11/2020
5155(47*10^136141+493)/9136142Robert Price03/2019
515627140^30699-30699^27140136108Frank Doornink01/2024
5157Phi(199391,-5)136098Henri Lifchitz12/2025
515840392^2339+2339^40392136082Hans Havermann12/2020
51592*10^136057-43136058Robert Price04/2018
51602^451971+21563136057Enzo Doria08/2023
5161(2^451956-5)/181136051Lelio R Paula07/2015
51622^451947-22165136050Enzo Doria07/2013
5163(3^451810)%(2^451810)136008Henri Lifchitz06/2025
51642^451787-21805136002Enzo Doria07/2013
51652^451734-112817135986Enzo Doria06/2014
5166(11*2^451714+1)/75135979Lelio R Paula07/2015
51672^451705-21879135977Enzo Doria07/2013
5168(4666^37249-1)/(4666^193-1)135957Ryan Propper11/2023
51692^451560-112349135934Enzo Doria06/2014
51702^451530+45135925Lelio R Paula08/2017
517126594^30719-30719^26594135925Frank Doornink03/2024
517231622^19875+19875^31622135922Hans Havermann11/2020
5173(25*10^135906-73)/3135907Robert Price09/2019
51742^451450-21743135900Enzo Doria07/2013
5175(7*10^135879+11)/9135879Tyler Busby01/2023
517635218^7199+7199^35218135846Hans Havermann11/2020
517735661^6446+6446^35661135844Hans Havermann11/2020
5178(7*33^89453-4743239)/32135835Eric Chen12/2023
517931869^18248+18248^31869135801Hans Havermann12/2020
5180(77*10^135789+157)/9135790Robert Price05/2022
5181Phi(286219,-3)135763Henri Lifchitz12/2025
51822^450958+60529135752Enzo Doria08/2023
51832^450805+65135706Lelio R Paula08/2017
518410^135669+21135670Boyan Hu12/2024
518530761^25728+25728^30761135669Hans Havermann12/2020
51862*10^135663+69135664Robert Price06/2020
518733962^9867+9867^33962135651Hans Havermann11/2020
518834474^8605+8605^34474135647Hans Havermann11/2020
518934501^8508+8508^34501135583Hans Havermann12/2020
519035487^6614+6614^35487135577Hans Havermann12/2020
5191(13725^32768+1)/131074135573Lelio R Paula03/2012
5192(313007#+121876)/(2*30469*424867)135559Makoto Morimoto08/2020
5194(5^193939+1)/6135557Paul Bourdelais12/2008
5193Phi(193939,-5)135557Henri Lifchitz12/2025
5195(76*10^135553-49)/9135554Robert Price07/2022
51965*3^284077+2^284077135540Jon Grantham08/2023
5197(844*10^135527-7)/9135529Robert Price05/2021
519827191^30560-30560^27191135517Frank Doornink01/2024
519940387^2260+2260^40387135463Hans Havermann12/2020
52002^449944-113247135447Enzo Doria07/2014
5201Phi(70509,-1105)135418Henri Lifchitz12/2025
52022^449770-113247135395Enzo Doria07/2014
52032^449637-21471135355Enzo Doria07/2013
520426061^30650-30650^26061135351Frank Doornink03/2024
52052^449571-75135335Lelio R Paula08/2017
5206(14*10^135301-53)/3135302Robert Price12/2018
5207(3*2^449494+1)/61340334013135301Lelio R Paula07/2015
5208(13*10^135279+437)/9135280Robert Price04/2018
52092^449330-35135262Lelio R Paula08/2017
5210(19*2^449325+1)/9135261Lelio R Paula07/2015
5211(2709^39601+1)/(2709^199+1)135260Martin Hopf12/2023
5212(13*10^135184-43)/3135185Robert Price11/2018
52132^449049-115309135178Enzo Doria07/2015
5214(10^135174+191)/3135174Robert Price02/2018
52152^449030-15135172Lelio R Paula08/2017
5216(157*10^135151-1)/3135153Robert Price01/2022
5217(2^448966+100280245065)135153Paul Bourdelais05/2022
5218(27*2^448936-1)/11135144Lelio R Paula07/2015
5219(37*10^135099+251)/9135100Robert Price09/2021
522032221^15586+15586^32221135095Hans Havermann12/2020
52212^448762-351401135091Enzo Doria07/2015
52222*10^135083-43135084Robert Price04/2018
522331357^20278+20278^31357135056Hans Havermann12/2020
522432242^15445+15445^32242135055Hans Havermann12/2020
5225k(198476)135054Robert Price07/2020
522632461^14470+14470^32461135053Hans Havermann12/2020
522731353^20288+20288^31353135045Hans Havermann12/2020
52285*10^135019+77135020Robert Price12/2018
5229(10^135011+719)/9135011Serge Batalov12/2014
5230(197*10^134978+7)/3134980Robert Price12/2020
52312^448386-2786261134978Enzo Doria03/2016
523226480^30517-30517^26480134975Frank Doornink03/2024
5233(73*10^134939+143)/9134940Robert Price07/2019
523433957^9392+9392^33957134903Hans Havermann12/2020
52352^448122+20809134899Enzo Doria08/2023
52362^448113-113949134896Enzo Doria11/2014
523730958^22755+22755^30958134887Hans Havermann12/2020
52382^447888-2786639134828Enzo Doria03/2016
52392^447870-396765134823Enzo Doria07/2013
524010^(2*67404+1)-10^67404-1134809Robert Price07/2023
52412^447766-21791134791Enzo Doria07/2013
5242(19*10^134786-49)/3134787Robert Price05/2019
5243Phi(202173,10)/10064306514895399941409134758Makoto Kamada05/2019
5244(23*2^447647+1)/155134755Lelio R Paula07/2015
52452^447552-1019134727Yves Minet02/2014
5246(2*10^134720-41)/3134720Robert Price02/2018
5247(25*10^134695-97)/9134696Robert Price01/2022
52482^447437-113569134692Enzo Doria08/2014
52492^447426-65134689Lelio R Paula08/2017
52502^447357-2797573134668Enzo Doria04/2016


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Created by  Henri Lifchitz & Renaud Lifchitz : October, 26 2000, last modification: December, 30 2025 13:17 (Time in France)

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