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
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Rank |
Probable prime |
Digits (> 50000) |
Who ? |
When ? |
4251 | 34989^7958+7958^34989 | 136486 | Hans Havermann | 12/2020 |
4252 | (2*10^136484+187)/9 | 136484 | Robert Price | 06/2022 |
4253 | 31007^25158+25158^31007 | 136452 | Hans Havermann | 11/2020 |
4254 | 2^453267-113827 | 136447 | Enzo Doria | 09/2014 |
4255 | 32234^17085+17085^32234 | 136435 | Hans Havermann | 12/2020 |
4256 | 2^453102+1877629 | 136398 | Enzo Doria | 08/2016 |
4257 | 31016^24981+24981^31016 | 136397 | Hans Havermann | 12/2020 |
4258 | (62*10^136384-791)/9 | 136385 | Robert Price | 06/2019 |
4259 | 34171^9798+9798^34171 | 136382 | Hans Havermann | 12/2020 |
4260 | (17*10^136354-113)/3 | 136355 | Robert Price | 06/2021 |
4261 | 32756^14541+14541^32756 | 136350 | Hans Havermann | 11/2020 |
4262 | 32205^17086+17086^32205 | 136313 | Hans Havermann | 12/2020 |
4263 | (25*10^136303+161)/3 | 136304 | Robert Price | 09/2019 |
4264 | 35337^7196+7196^35337 | 136299 | Hans Havermann | 12/2020 |
4265 | (182*10^136291+1)/3 | 136293 | Robert Price | 02/2020 |
4266 | (88*10^136234+83)/9 | 136235 | Robert Price | 03/2022 |
4267 | 23*10^136225-7 | 136227 | Robert Price | 02/2020 |
4268 | L(651821) | 136223 | Henri Lifchitz | 09/2008 |
4269 | 25519^30908-30908^25519 | 136208 | Frank Doornink | 02/2024 |
4270 | 2^452460+77701 | 136205 | Enzo Doria | 05/2016 |
4271 | 2^452440-114755 | 136199 | Enzo Doria | 04/2015 |
4272 | 28625^30558-30558^28625 | 136190 | Frank Doornink | 05/2024 |
4273 | 32286^16489+16489^32286 | 136157 | Hans Havermann | 11/2020 |
4274 | (47*10^136141+493)/9 | 136142 | Robert Price | 03/2019 |
4275 | 27140^30699-30699^27140 | 136108 | Frank Doornink | 01/2024 |
4276 | 40392^2339+2339^40392 | 136082 | Hans Havermann | 12/2020 |
4277 | 2*10^136057-43 | 136058 | Robert Price | 04/2018 |
4278 | 2^451971+21563 | 136057 | Enzo Doria | 08/2023 |
4279 | (2^451956-5)/181 | 136051 | Lelio R Paula | 07/2015 |
4280 | 2^451947-22165 | 136050 | Enzo Doria | 07/2013 |
4281 | 2^451787-21805 | 136002 | Enzo Doria | 07/2013 |
4282 | 2^451734-112817 | 135986 | Enzo Doria | 06/2014 |
4283 | (11*2^451714+1)/75 | 135979 | Lelio R Paula | 07/2015 |
4284 | 2^451705-21879 | 135977 | Enzo Doria | 07/2013 |
4285 | (4666^37249-1)/(4666^193-1) | 135957 | Ryan Propper | 11/2023 |
4286 | 2^451560-112349 | 135934 | Enzo Doria | 06/2014 |
4287 | 2^451530+45 | 135925 | Lelio R Paula | 08/2017 |
4288 | 26594^30719-30719^26594 | 135925 | Frank Doornink | 03/2024 |
4289 | 31622^19875+19875^31622 | 135922 | Hans Havermann | 11/2020 |
4290 | (25*10^135906-73)/3 | 135907 | Robert Price | 09/2019 |
4291 | 2^451450-21743 | 135900 | Enzo Doria | 07/2013 |
4292 | (7*10^135879+11)/9 | 135879 | Tyler Busby | 01/2023 |
4293 | 35218^7199+7199^35218 | 135846 | Hans Havermann | 11/2020 |
4294 | 35661^6446+6446^35661 | 135844 | Hans Havermann | 11/2020 |
4295 | (7*33^89453-4743239)/32 | 135835 | Eric Chen | 12/2023 |
4296 | 31869^18248+18248^31869 | 135801 | Hans Havermann | 12/2020 |
4297 | (77*10^135789+157)/9 | 135790 | Robert Price | 05/2022 |
4298 | 2^450958+60529 | 135752 | Enzo Doria | 08/2023 |
4299 | 2^450805+65 | 135706 | Lelio R Paula | 08/2017 |
4300 | 30761^25728+25728^30761 | 135669 | Hans Havermann | 12/2020 |
4301 | 2*10^135663+69 | 135664 | Robert Price | 06/2020 |
4302 | 33962^9867+9867^33962 | 135651 | Hans Havermann | 11/2020 |
4303 | 34474^8605+8605^34474 | 135647 | Hans Havermann | 11/2020 |
4304 | 34501^8508+8508^34501 | 135583 | Hans Havermann | 12/2020 |
4305 | 35487^6614+6614^35487 | 135577 | Hans Havermann | 12/2020 |
4306 | (13725^32768+1)/131074 | 135573 | Lelio R Paula | 03/2012 |
4307 | (313007#+121876)/(2*30469*424867) | 135559 | Makoto Morimoto | 08/2020 |
4308 | (5^193939+1)/6 | 135557 | Paul Bourdelais | 12/2008 |
4309 | (76*10^135553-49)/9 | 135554 | Robert Price | 07/2022 |
4310 | 5*3^284077+2^284077 | 135540 | Jon Grantham | 08/2023 |
4311 | (844*10^135527-7)/9 | 135529 | Robert Price | 05/2021 |
4312 | 27191^30560-30560^27191 | 135517 | Frank Doornink | 01/2024 |
4313 | 40387^2260+2260^40387 | 135463 | Hans Havermann | 12/2020 |
4314 | 2^449944-113247 | 135447 | Enzo Doria | 07/2014 |
4315 | 2^449770-113247 | 135395 | Enzo Doria | 07/2014 |
4316 | 2^449637-21471 | 135355 | Enzo Doria | 07/2013 |
4317 | 26061^30650-30650^26061 | 135351 | Frank Doornink | 03/2024 |
4318 | 2^449571-75 | 135335 | Lelio R Paula | 08/2017 |
4319 | (14*10^135301-53)/3 | 135302 | Robert Price | 12/2018 |
4320 | (3*2^449494+1)/61340334013 | 135301 | Lelio R Paula | 07/2015 |
4321 | (13*10^135279+437)/9 | 135280 | Robert Price | 04/2018 |
4322 | 2^449330-35 | 135262 | Lelio R Paula | 08/2017 |
4323 | (19*2^449325+1)/9 | 135261 | Lelio R Paula | 07/2015 |
4324 | (2709^39601+1)/(2709^199+1) | 135260 | Martin Hopf | 12/2023 |
4325 | (13*10^135184-43)/3 | 135185 | Robert Price | 11/2018 |
4326 | 2^449049-115309 | 135178 | Enzo Doria | 07/2015 |
4327 | (10^135174+191)/3 | 135174 | Robert Price | 02/2018 |
4328 | 2^449030-15 | 135172 | Lelio R Paula | 08/2017 |
4329 | (157*10^135151-1)/3 | 135153 | Robert Price | 01/2022 |
4330 | (2^448966+100280245065) | 135153 | Paul Bourdelais | 05/2022 |
4331 | (27*2^448936-1)/11 | 135144 | Lelio R Paula | 07/2015 |
4332 | (37*10^135099+251)/9 | 135100 | Robert Price | 09/2021 |
4333 | 32221^15586+15586^32221 | 135095 | Hans Havermann | 12/2020 |
4334 | 2^448762-351401 | 135091 | Enzo Doria | 07/2015 |
4335 | 2*10^135083-43 | 135084 | Robert Price | 04/2018 |
4336 | 31357^20278+20278^31357 | 135056 | Hans Havermann | 12/2020 |
4337 | 32242^15445+15445^32242 | 135055 | Hans Havermann | 12/2020 |
4338 | k(198476) | 135054 | Robert Price | 07/2020 |
4339 | 32461^14470+14470^32461 | 135053 | Hans Havermann | 12/2020 |
4340 | 31353^20288+20288^31353 | 135045 | Hans Havermann | 12/2020 |
4341 | 5*10^135019+77 | 135020 | Robert Price | 12/2018 |
4342 | (10^135011+719)/9 | 135011 | Serge Batalov | 12/2014 |
4343 | (197*10^134978+7)/3 | 134980 | Robert Price | 12/2020 |
4344 | 2^448386-2786261 | 134978 | Enzo Doria | 03/2016 |
4345 | 26480^30517-30517^26480 | 134975 | Frank Doornink | 03/2024 |
4346 | (73*10^134939+143)/9 | 134940 | Robert Price | 07/2019 |
4347 | 33957^9392+9392^33957 | 134903 | Hans Havermann | 12/2020 |
4348 | 2^448122+20809 | 134899 | Enzo Doria | 08/2023 |
4349 | 2^448113-113949 | 134896 | Enzo Doria | 11/2014 |
4350 | 30958^22755+22755^30958 | 134887 | Hans Havermann | 12/2020 |
4351 | 2^447888-2786639 | 134828 | Enzo Doria | 03/2016 |
4352 | 2^447870-396765 | 134823 | Enzo Doria | 07/2013 |
4353 | 10^(2*67404+1)-10^67404-1 | 134809 | Robert Price | 07/2023 |
4354 | 2^447766-21791 | 134791 | Enzo Doria | 07/2013 |
4355 | (19*10^134786-49)/3 | 134787 | Robert Price | 05/2019 |
4356 | Phi(202173,10)/10064306514895399941409 | 134758 | Makoto Kamada | 05/2019 |
4357 | (23*2^447647+1)/155 | 134755 | Lelio R Paula | 07/2015 |
4358 | 2^447552-1019 | 134727 | Yves Minet | 02/2014 |
4359 | (2*10^134720-41)/3 | 134720 | Robert Price | 02/2018 |
4360 | (25*10^134695-97)/9 | 134696 | Robert Price | 01/2022 |
4361 | 2^447437-113569 | 134692 | Enzo Doria | 08/2014 |
4362 | 2^447426-65 | 134689 | Lelio R Paula | 08/2017 |
4363 | 2^447357-2797573 | 134668 | Enzo Doria | 04/2016 |
4364 | 2^447278+93 | 134645 | Lelio R Paula | 08/2017 |
4365 | 33193^11370+11370^33193 | 134623 | Hans Havermann | 12/2020 |
4366 | 30736^23979+23979^30736 | 134619 | Hans Havermann | 11/2020 |
4367 | 2^447094-113193 | 134589 | Enzo Doria | 07/2014 |
4368 | 3^282041-9934 | 134568 | Enzo Doria | 05/2014 |
4369 | 2^447019-109039 | 134567 | Enzo Doria | 04/2014 |
4370 | 31376^19437+19437^31376 | 134561 | Hans Havermann | 12/2020 |
4371 | 2^446990-22041 | 134558 | Enzo Doria | 07/2013 |
4372 | 123^64370+122 | 134528 | Karsten Bonath | 04/2018 |
4373 | 30100^29461+29461^30100 | 134525 | Hans Havermann | 11/2020 |
4374 | 31251^20158+20158^31251 | 134519 | Hans Havermann | 11/2020 |
4375 | 2^446782-39701 | 134495 | Enzo Doria | 09/2015 |
4376 | 31817^16858+16858^31817 | 134485 | Hans Havermann | 12/2020 |
4377 | 32448^13937+13937^32448 | 134471 | Hans Havermann | 12/2020 |
4378 | 5^192321+3^192321-1 | 134427 | Jon Grantham | 08/2023 |
4379 | 2^446494-16485 | 134409 | Enzo Doria | 04/2013 |
4380 | 30042^29785+29785^30042 | 134408 | Hans Havermann | 12/2020 |
4381 | 29504^30069-30069^29504 | 134405 | Norbert Schneider | 12/2014 |
4382 | 2^446441+65 | 134393 | Lelio R Paula | 08/2017 |
4383 | (10^134385+719)/9 | 134385 | Serge Batalov | 12/2014 |
4384 | 30043^29688+29688^30043 | 134370 | Hans Havermann | 12/2020 |
4385 | (2*10^134364+529)/9 | 134364 | Robert Price | 01/2018 |
4386 | 34657^7512+7512^34657 | 134323 | Hans Havermann | 11/2020 |
4387 | (13*2^446187-1)/661 | 134314 | Lelio R Paula | 07/2015 |
4388 | 5^192103+3^192103+2^192103+1 | 134275 | Matthias Baur | 12/2019 |
4389 | 42035^1564+1564^42035 | 134270 | Hans Havermann | 12/2020 |
4391 | (2^446022-7)/339 | 134264 | Lelio R Paula | 07/2015 |
4390 | 30621^24248+24248^30621 | 134264 | Hans Havermann | 12/2020 |
4392 | 30341^26562+26562^30341 | 134237 | Hans Havermann | 11/2020 |
4393 | (189^58967-1)/188 | 134234 | Anonymous | 06/2024 |
4394 | 10^134209+99867 | 134210 | Patrick De Geest | 05/2021 |
4395 | 10^134209-80000001 | 134209 | Robert Price | 04/2021 |
4396 | 10^134209-323283 | 134209 | Patrick De Geest | 05/2021 |
4397 | 29976^29953+29953^29976 | 134186 | Hans Havermann | 12/2020 |
4398 | 35038^6755+6755^35038 | 134183 | Hans Havermann | 12/2020 |
4399 | 63^74568+2 | 134174 | Lelio R Paula | 06/2017 |
4400 | 2^445671-22071 | 134161 | Enzo Doria | 07/2013 |
4401 | 532^49205+49205^532 | 134129 | Norbert Schneider | 02/2019 |
4402 | 36453^4780+4780^36453 | 134127 | Hans Havermann | 04/2021 |
4403 | (28*10^134122-1)/9 | 134123 | Serge Batalov | 10/2014 |
4404 | 2^445515-113859 | 134114 | Enzo Doria | 10/2014 |
4406 | (22*10^134111-37)/3 | 134112 | Robert Price | 04/2019 |
4405 | 31083^20636+20636^31083 | 134112 | Hans Havermann | 04/2021 |
4407 | 3*2^445478+5 | 134103 | Jon Grantham | 07/2023 |
4408 | 31622^17379+17379^31622 | 134079 | Hans Havermann | 04/2021 |
4409 | 5*2^445380-3 | 134074 | Jon Grantham | 07/2023 |
4410 | (6*32^89076+4241)/31 | 134073 | Eric Chen | 11/2023 |
4411 | (277*10^134059-7)/9 | 134061 | Robert Price | 02/2022 |
4412 | 2^445328-216917 | 134058 | Enzo Doria | 05/2014 |
4413 | 2^445202+1874899 | 134020 | Enzo Doria | 06/2016 |
4414 | 5^191739-3^191739-1 | 134020 | Jon Grantham | 08/2023 |
4415 | (35*10^134003-89)/9 | 134004 | Robert Price | 02/2022 |
4416 | (13*2^445102+1)/17 | 133989 | Lelio R Paula | 07/2015 |
4417 | (35*10^133979-593)/9 | 133980 | Robert Price | 07/2018 |
4418 | 2*10^133955+51 | 133956 | Robert Price | 05/2018 |
4419 | (49*10^133952+437)/9 | 133953 | Robert Price | 09/2021 |
4420 | 2^444964-113639 | 133948 | Enzo Doria | 08/2014 |
4421 | 31811^16240+16240^31811 | 133943 | Hans Havermann | 04/2021 |
4422 | 10^133902+167841 | 133903 | Patrick De Geest | 05/2021 |
4424 | 28118^30097-30097^28118 | 133902 | Norbert Schneider | 01/2015 |
4423 | 10^133902-100001 | 133902 | Robert Price | 07/2020 |
4425 | 2^444784-113859 | 133894 | Enzo Doria | 10/2014 |
4426 | (132^63127-1)/131 | 133864 | Anonymous | 06/2024 |
4427 | 32303^13914+13914^32303 | 133846 | Hans Havermann | 04/2021 |
4428 | (2276213*2^444444+1)/3 | 133797 | Alex_soldier | 11/2022 |
4429 | (1403559*2^444444+1)/5 | 133797 | Alex_soldier | 11/2022 |
4430 | (1209887*2^444444+1)/9 | 133797 | Alex_soldier | 11/2022 |
4431 | (608239*2^444444+1)/25 | 133796 | Alex_soldier | 11/2022 |
4432 | (1824587*2^444444+1)/27 | 133796 | Alex_soldier | 11/2022 |
4433 | (40795*2^444444+1)/7 | 133795 | Alex_soldier | 11/2022 |
4434 | 30739^22458+22458^30739 | 133757 | Hans Havermann | 04/2021 |
4435 | 34942^6721+6721^34942 | 133739 | Hans Havermann | 04/2021 |
4436 | (2^444046+100280245065) | 133672 | Paul Bourdelais | 05/2022 |
4437 | 34792^6935+6935^34792 | 133638 | Hans Havermann | 04/2021 |
4438 | (266*10^133603+1)/3 | 133605 | Robert Price | 04/2020 |
4439 | 32261^13842+13842^32261 | 133600 | Hans Havermann | 04/2021 |
4440 | (89*10^133580+1)/9 | 133581 | Serge Batalov | 05/2010 |
4441 | (134*10^133573-11)/3 | 133575 | Robert Price | 01/2022 |
4442 | 26726^30173-30173^26726 | 133574 | Frank Doornink | 03/2024 |
4443 | 62^74521-61^74521 | 133571 | Robert Price | 05/2013 |
4444 | (182*10^133543+1)/3 | 133545 | Robert Price | 02/2020 |
4445 | (103*10^133535+11)/3 | 133537 | Robert Price | 01/2021 |
4446 | 32589^12520+12520^32589 | 133537 | Hans Havermann | 03/2021 |
4447 | L(638839)/274700771 | 133502 | Serge Batalov | 07/2024 |
4448 | 34516^7373+7373^34516 | 133496 | Hans Havermann | 04/2021 |
4449 | 8*10^133487-37 | 133488 | Robert Price | 03/2022 |
4450 | 30135^26882+26882^30135 | 133482 | Hans Havermann | 04/2021 |
4451 | 2^443198-1867301 | 133416 | Enzo Doria | 03/2016 |
4452 | (19*10^133390+101)/3 | 133391 | Robert Price | 09/2019 |
4453 | (71^72043-1)/70 | 133369 | Paul Bourdelais | 09/2017 |
4454 | 36117^4910+4910^36117 | 133311 | Hans Havermann | 04/2021 |
4455 | 2^442799+1874633 | 133296 | Enzo Doria | 06/2016 |
4456 | L(637751) | 133283 | Henri Lifchitz | 09/2008 |
4457 | 109^65410-2 | 133269 | Lelio R Paula | 10/2017 |
4458 | 2^442688-113489 | 133263 | Enzo Doria | 08/2014 |
4459 | (7*2^442640-1)/783 | 133246 | Lelio R Paula | 07/2015 |
4460 | (9*2^442463+1)/17441 | 133192 | Lelio R Paula | 07/2015 |
4461 | 2^442437-1849993 | 133187 | Enzo Doria | 08/2015 |
4462 | 2^442430-2791721 | 133185 | Enzo Doria | 03/2016 |
4463 | (13*2^442428-1)/309 | 133183 | Lelio R Paula | 07/2015 |
4464 | 29959^27870+27870^29959 | 133172 | Hans Havermann | 03/2021 |
4465 | (25*2^442379-1)/71 | 133169 | Lelio R Paula | 07/2015 |
4466 | 2^442368+213691 | 133167 | Enzo Doria | 09/2023 |
4467 | 34240^7737+7737^34240 | 133145 | Hans Havermann | 03/2021 |
4468 | 452^50145+50145^452 | 133142 | Norbert Schneider | 09/2020 |
4469 | (355^52201-1)/354 | 133122 | Tom Wu | 08/2024 |
4470 | 30659^21796+21796^30659 | 133011 | Hans Havermann | 04/2021 |
4471 | 33276^9935+9935^33276 | 133010 | Hans Havermann | 04/2021 |
4472 | 30111^26122+26122^30111 | 133001 | Hans Havermann | 04/2021 |
4473 | 30790^20869+20869^30790 | 132998 | Hans Havermann | 04/2021 |
4475 | (2^441799+78557)/5 | 132995 | Lelio R Paula | 07/2015 |
4474 | 8*10^132994-27 | 132995 | Robert Price | 10/2021 |
4476 | (109*10^132992+11)/3 | 132994 | Robert Price | 06/2022 |
4477 | 2^441781-2787883 | 132990 | Enzo Doria | 03/2016 |
4478 | fibonacci(636232)+4 | 132965 | Jon Grantham | 08/2023 |
4479 | (3*2^441685+1)/749 | 132959 | Lelio R Paula | 07/2015 |
4480 | 2^441618+37 | 132941 | Lelio R Paula | 08/2017 |
4481 | 34857^6514+6514^34857 | 132940 | Hans Havermann | 04/2021 |
4482 | 34065^7988+7988^34065 | 132937 | Hans Havermann | 04/2021 |
4483 | 35571^5452+5452^35571 | 132914 | Hans Havermann | 04/2021 |
4484 | 2^441521-113575 | 132912 | Enzo Doria | 08/2014 |
4485 | 7*10^132884-99 | 132885 | Robert Price | 06/2019 |
4486 | 26987^29988-29988^26987 | 132882 | Frank Doornink | 03/2024 |
4487 | (103*10^132879+17)/3 | 132881 | Robert Price | 08/2020 |
4488 | 2^441396-65 | 132874 | Lelio R Paula | 08/2017 |
4489 | 33350^9633+9633^33350 | 132859 | Hans Havermann | 04/2021 |
4490 | 2^441330+1871959 | 132854 | Enzo Doria | 05/2016 |
4491 | 25772^30111-30111^25772 | 132825 | Frank Doornink | 02/2024 |
4492 | 2^441063+383 | 132774 | Lelio R Paula | 06/2012 |
4493 | (10^132753+7)/17/19 | 132751 | Alfred Reich | 06/2021 |
4494 | (22*10^132746+53)/3 | 132747 | Robert Price | 07/2019 |
4495 | (77*10^132744-149)/9 | 132745 | Robert Price | 03/2022 |
4496 | (22*10^132732+119)/3 | 132733 | Robert Price | 04/2021 |
4497 | 2^440846+1870909 | 132708 | Enzo Doria | 05/2016 |
4498 | (948^44579-1)/947 | 132701 | Jinyuan Wang | 04/2023 |
4499 | 2^440656-113489 | 132651 | Enzo Doria | 08/2014 |
4500 | numbpart(14180123587) | 132646 | Serge Batalov | 04/2017 |