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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Rank |
Probable prime |
Digits (> 50000) |
Who ? |
When ? |
7001 | 6^134465+95 | 104635 | Lelio R Paula | 11/2016 |
7002 | 2^347517-17301 | 104614 | Enzo Doria | 05/2013 |
7003 | (2^347493+3186)/2 | 104606 | Stefano Morozzi | 09/2020 |
7004 | (2^347490+2574)/2 | 104605 | Stefano Morozzi | 09/2020 |
7005 | 3^219222-310 | 104596 | Lelio R Paula | 11/2016 |
7006 | 25993^10554+10554^25993 | 104581 | Hans Havermann | 09/2020 |
7007 | (15*2^347399-1)/13 | 104578 | Lelio R Paula | 03/2014 |
7008 | 2^347372-17853 | 104570 | Enzo Doria | 05/2013 |
7009 | 2^347314+99 | 104552 | Lelio R Paula | 09/2011 |
7010 | 2^347300-22233 | 104548 | Enzo Doria | 06/2013 |
7011 | 2^347287-19845 | 104544 | Enzo Doria | 06/2013 |
7012 | 2^347258-231191 | 104536 | Harrison Mesh | 06/2022 |
7013 | (31*2^347254-1)/891 | 104533 | Lelio R Paula | 03/2014 |
7014 | 5*F(250091)*(F(250091)-1)+1 | 104532 | Serge Batalov | 04/2015 |
7015 | 7*2^347239-3 | 104531 | Lelio R Paula | 09/2014 |
7016 | (3^219098-8)/514147439969 | 104525 | Lelio R Paula | 12/2013 |
7017 | 5*3^219047+8 | 104513 | Lelio R Paula | 09/2014 |
7018 | 2^347148-109073 | 104502 | Enzo Doria | 04/2014 |
7019 | 2^347129-20145 | 104497 | Enzo Doria | 06/2013 |
7020 | 4*10^104461-57 | 104462 | Robert Price | 10/2018 |
7021 | (7*10^(2*52227+1)+9*10^52227-7)/9 | 104455 | Robert Price | 10/2023 |
7022 | (2^346989+590)/2 | 104454 | Stefano Morozzi | 09/2020 |
7023 | 2^346923-19585 | 104435 | Enzo Doria | 05/2013 |
7024 | (11*2^346864-1)/175 | 104416 | Lelio R Paula | 03/2014 |
7025 | 2^346854+346854^2+1 | 104414 | Robert Price | 06/2014 |
7026 | 2^346834+11715 | 104408 | Lelio R Paula | 04/2015 |
7027 | 24276^19961+19961^24276 | 104392 | Hans Havermann | 09/2020 |
7028 | 79^55009+78 | 104387 | Norbert Schneider | 02/2015 |
7029 | 3^218744+58 | 104368 | Lelio R Paula | 11/2016 |
7030 | 9*10^104361+89 | 104362 | Robert Price | 11/2019 |
7031 | 25048^14665+14665^25048 | 104358 | Hans Havermann | 09/2020 |
7032 | 2^346649+65 | 104352 | Lelio R Paula | 09/2011 |
7033 | (19*33^68718-600883)/32 | 104350 | Eric Chen | 05/2023 |
7034 | 2^346638-17265 | 104349 | Enzo Doria | 05/2013 |
7035 | (2^346606+2082)/2 | 104339 | Stefano Morozzi | 09/2020 |
7036 | (2^346607+2070)/2 | 104339 | Stefano Morozzi | 09/2020 |
7037 | (2^346582+3202)/2 | 104332 | Stefano Morozzi | 09/2020 |
7038 | 26092^9967+9967^26092 | 104331 | Hans Havermann | 09/2020 |
7039 | 5*10^104326+77 | 104327 | Robert Price | 12/2018 |
7040 | (2^346564+2026)/2 | 104326 | Stefano Morozzi | 09/2020 |
7041 | (8925^26569-1)/(8925^163-1) | 104320 | Ryan Propper | 11/2023 |
7044 | 2^346527-111817 | 104316 | Enzo Doria | 05/2014 |
7043 | 6^134055+101 | 104316 | Lelio R Paula | 11/2016 |
7042 | fibonacci(499147)-4 | 104316 | Jon Grantham | 08/2023 |
7045 | 92105!4+8 | 104312 | Robert Price | 09/2019 |
7046 | (7^123407-5^123407)/2 | 104291 | Jon Grantham | 08/2023 |
7047 | 6^134013+163 | 104283 | Lelio R Paula | 11/2016 |
7048 | 10^(2*52140+1)-10^52140-1 | 104281 | Robert Price | 07/2023 |
7049 | (22*10^104272-61)/3 | 104273 | Robert Price | 03/2022 |
7050 | (2^346318+862)/2 | 104252 | Stefano Morozzi | 02/2021 |
7052 | 18^83049-89 | 104250 | Lelio R Paula | 01/2017 |
7051 | (2^346311+606)/2 | 104250 | Stefano Morozzi | 09/2020 |
7053 | (166*10^104230+11)/3 | 104232 | Robert Price | 03/2021 |
7054 | 2^346213+484049 | 104221 | Enzo Doria | 04/2017 |
7055 | 18^83021-91 | 104214 | Lelio R Paula | 01/2017 |
7056 | 10^104212+128779 | 104213 | Patrick De Geest | 05/2016 |
7057 | 10^104212+237447 | 104213 | Patrick De Geest | 05/2016 |
7058 | 10^104212+242139 | 104213 | Patrick De Geest | 05/2016 |
7059 | 10^104212+269199 | 104213 | Patrick De Geest | 05/2016 |
7060 | 24254^19803+19803^24254 | 104213 | Hans Havermann | 09/2020 |
7061 | (10^104212-71)/1 | 104212 | Serge Batalov | 12/2014 |
7062 | 23678^23821-23821^23678 | 104202 | Norbert Schneider | 01/2020 |
7063 | (13*31^69863+12407)/30 | 104191 | Eric Chen | 04/2024 |
7064 | 2^346078+7695 | 104180 | Lelio R Paula | 12/2016 |
7065 | 2^346055-19537 | 104173 | Enzo Doria | 05/2013 |
7066 | (3*2^346057+1)/77 | 104173 | Lelio R Paula | 12/2013 |
7067 | 2^346037-20125 | 104168 | Enzo Doria | 06/2013 |
7068 | (34*10^104168-7)/9/13/551179 | 104162 | Makoto Morimoto | 05/2016 |
7069 | 6^133854-17993 | 104159 | Enzo Doria | 03/2013 |
7070 | 2^345990+1874239 | 104154 | Enzo Doria | 06/2016 |
7071 | 2^345988-20373 | 104153 | Enzo Doria | 06/2013 |
7072 | (2^345965+2214)/2 | 104146 | Stefano Morozzi | 09/2020 |
7073 | (26*10^104132-503)/9 | 104133 | Robert Price | 07/2018 |
7074 | 3*5^148968+8 | 104125 | Lelio R Paula | 11/2014 |
7075 | (7*10^104113+53)/3 | 104114 | Robert Price | 05/2018 |
7076 | p(21253)#/2+8 | 104113 | Robert Price | 01/2017 |
7077 | 33582^1259+1259^33582 | 104106 | Hans Havermann | 09/2020 |
7078 | 32958^1441+1441^32958 | 104104 | Hans Havermann | 09/2020 |
7079 | 29127^3748+3748^29127 | 104095 | Hans Havermann | 09/2020 |
7080 | 322^41507+41507^322 | 104094 | Norbert Schneider | 12/2014 |
7081 | 6^133768-17423 | 104092 | Enzo Doria | 03/2013 |
7082 | 2^345786-19557 | 104092 | Enzo Doria | 05/2013 |
7083 | 171^46606-2 | 104072 | Lelio R Paula | 10/2017 |
7084 | (29*10^104071+91)/3 | 104072 | Robert Price | 04/2020 |
7085 | norm(Mod(x,x^3-x-1)^852167-1) | 104070 | Paul Vanderveen | 09/2022 |
7086 | 2^345704-149 | 104068 | Lelio R Paula | 09/2011 |
7087 | 25821^10712+10712^25821 | 104056 | Hans Havermann | 09/2020 |
7088 | (2^345662+2038)/2 | 104055 | Stefano Morozzi | 09/2020 |
7089 | 6^133704-17273 | 104042 | Enzo Doria | 02/2013 |
7090 | (3*2^345590-1)/23 | 104033 | Lelio R Paula | 03/2014 |
7091 | (19*2^345590+1)/33859 | 104030 | Lelio R Paula | 12/2013 |
7092 | 2^345547+11 | 104021 | Lelio R Paula | 09/2011 |
7093 | (19*10^104014-49)/3 | 104015 | Robert Price | 05/2019 |
7094 | (2^345519+1794)/2 | 104012 | Stefano Morozzi | 01/2021 |
7095 | 2^345504+723 | 104008 | Lelio R Paula | 09/2011 |
7096 | 2^345498-20037 | 104006 | Enzo Doria | 06/2013 |
7098 | 18^82854-37 | 104005 | Lelio R Paula | 01/2017 |
7097 | (2^345497+2070)/2 | 104005 | Stefano Morozzi | 09/2020 |
7099 | 2^345486-109065 | 104002 | Enzo Doria | 04/2014 |
7100 | 2^345487-1851507 | 104002 | Enzo Doria | 08/2015 |
7101 | 2^345476+777 | 103999 | Lelio R Paula | 09/2011 |
7102 | (2^345477+1554)/2 | 103999 | Stefano Morozzi | 09/2020 |
7103 | 4*10^103981-83 | 103982 | Robert Price | 10/2018 |
7104 | (2^345327+3206)/2 | 103954 | Stefano Morozzi | 09/2020 |
7105 | (5*2^345321-1)/3 | 103953 | Lelio R Paula | 03/2014 |
7106 | (2^345267-9)/539049127 | 103927 | Lelio R Paula | 12/2013 |
7107 | (19*10^103907+77)/3 | 103908 | Robert Price | 05/2019 |
7108 | (78557*2^345163+1)/78589 | 103905 | Lelio R Paula | 07/2014 |
7109 | 2^345106-112181 | 103888 | Enzo Doria | 06/2014 |
7110 | (2^345105+1326)/2 | 103887 | Stefano Morozzi | 02/2021 |
7111 | 2^345079+99 | 103880 | Lelio R Paula | 09/2011 |
7112 | (2^345034+1198)/2 | 103866 | Stefano Morozzi | 09/2020 |
7113 | 11^99736-1500 | 103865 | Enzo Doria | 12/2012 |
7114 | (569^37699-1)/568 | 103863 | Serge Batalov | 06/2022 |
7115 | (2^345010+2082)/2 | 103859 | Stefano Morozzi | 09/2020 |
7116 | 23263^23784-23784^23263 | 103857 | Norbert Schneider | 01/2020 |
7117 | 3*10^103844+31 | 103845 | Robert Price | 06/2021 |
7118 | 444*33^68368+19 | 103821 | Eric Chen | 05/2023 |
7119 | 23927^21814+21814^23927 | 103813 | Hans Havermann | 09/2020 |
7120 | 2^344842-20157 | 103808 | Enzo Doria | 06/2013 |
7121 | (47*2^344822+1)/1071 | 103801 | Lelio R Paula | 05/2015 |
7122 | 2^344802-20765 | 103796 | Enzo Doria | 06/2013 |
7123 | 2^344794-3821 | 103794 | Yves Minet | 05/2011 |
7124 | 2^344782-109103 | 103790 | Enzo Doria | 04/2014 |
7125 | 3^217521-112292 | 103784 | Enzo Doria | 06/2014 |
7126 | 2^344759-3505 | 103783 | Lelio R Paula | 11/2016 |
7127 | 2^344735-147 | 103776 | Lelio R Paula | 09/2011 |
7128 | L(496533)-p(496533) | 103770 | Robert Price | 02/2018 |
7129 | 2*10^103749-69 | 103750 | Robert Price | 03/2018 |
7130 | (55459*2^344617+1)/3 | 103745 | Lelio R Paula | 07/2014 |
7131 | 2^344607-108891 | 103738 | Enzo Doria | 03/2014 |
7133 | (2^344608+3798)/2 | 103738 | Stefano Morozzi | 02/2021 |
7132 | (1097^34123-1)/1096 | 103738 | Serge Batalov | 06/2022 |
7134 | 2^344560+22411 | 103723 | Enzo Doria | 09/2023 |
7135 | (148*10^103718-1)/3 | 103720 | Robert Price | 03/2020 |
7136 | 2^344541-19561 | 103718 | Enzo Doria | 05/2013 |
7137 | (1017*2^344529-1)/569 | 103714 | Lelio R Paula | 05/2015 |
7138 | (8896^26263-1)/8895 | 103714 | Serge Batalov | 06/2022 |
7139 | (2^344503+1758)/2 | 103706 | Stefano Morozzi | 09/2020 |
7140 | (4*10^103703-1)/3 | 103704 | Serge Batalov | 08/2009 |
7141 | 2^344444-455 | 103688 | Yves Minet | 03/2012 |
7142 | (4*10^103678-43)/3 | 103679 | Robert Price | 01/2022 |
7143 | (13*53^238539*617^9)/10^307661 | 103673 | Hans Havermann | 06/2017 |
7144 | (2^344367+2738)/2 | 103665 | Stefano Morozzi | 01/2021 |
7146 | 2^344317-109933 | 103650 | Enzo Doria | 04/2014 |
7145 | 26055^9508+9508^26055 | 103650 | Hans Havermann | 09/2020 |
7147 | 2^344309-1852033 | 103648 | Enzo Doria | 08/2015 |
7148 | 25729^10672+10672^25729 | 103643 | Hans Havermann | 09/2020 |
7149 | (2^344289+1166)/2 | 103642 | Stefano Morozzi | 09/2020 |
7150 | 3*10^103637+61 | 103638 | Robert Price | 09/2020 |
7151 | (2^344246+1614)/2 | 103629 | Stefano Morozzi | 09/2020 |
7152 | 2^344213-21253 | 103619 | Enzo Doria | 06/2013 |
7153 | 2^344196-465 | 103614 | Lelio R Paula | 11/2016 |
7154 | 2^344187-20001 | 103611 | Enzo Doria | 06/2013 |
7155 | (117191#+(355573#)/(117191#))/(200233679) | 103602 | Makoto Morimoto | 10/2017 |
7156 | (237^43627-1)/236 | 103601 | Serge Batalov | 06/2022 |
7157 | 20^79621-19^79621 | 103590 | Jean-Louis Charton | 03/2011 |
7158 | Phi(155391,10)/1243129 | 103586 | Maksym Voznyy | 09/2015 |
7159 | (9^108553-2^108553)/7 | 103586 | Jon Grantham | 07/2023 |
7160 | 2^344085-20365 | 103580 | Enzo Doria | 06/2013 |
7161 | 5^148169+54 | 103566 | Lelio R Paula | 11/2016 |
7162 | 2^344017-108795 | 103560 | Enzo Doria | 03/2014 |
7163 | (2^343974+2670)/2 | 103547 | Stefano Morozzi | 09/2020 |
7164 | 2^343971-5077 | 103546 | Lelio R Paula | 09/2011 |
7165 | (7*10^103531+71)/3 | 103532 | Robert Price | 05/2018 |
7166 | 2^343899+141 | 103524 | Lelio R Paula | 08/2011 |
7167 | (2^343933+1)/(3*98294339989393) | 103520 | Gord Palameta | 08/2018 |
7168 | 6^133029-67 | 103517 | Lelio R Paula | 11/2016 |
7169 | (17*2^343877+1)/13625 | 103515 | Lelio R Paula | 12/2013 |
7170 | 66*10^103507+7 | 103509 | Robert Price | 07/2020 |
7171 | 26297^8614+8614^26297 | 103485 | Hans Havermann | 09/2020 |
7172 | (2^343764+2658)/2 | 103483 | Stefano Morozzi | 09/2020 |
7173 | 26499^8036+8036^26499 | 103480 | Hans Havermann | 09/2020 |
7174 | (136*10^103474-1)/9 | 103476 | Serge Batalov | 12/2014 |
7175 | 5^148014-24 | 103458 | Lelio R Paula | 11/2016 |
7176 | 28316^4503+4503^28316 | 103453 | Hans Havermann | 09/2020 |
7177 | (22*10^103450+53)/3 | 103451 | Robert Price | 07/2019 |
7178 | 2^343604+9931 | 103436 | Yves Minet | 01/2011 |
7179 | 2^343601-21189 | 103435 | Enzo Doria | 06/2013 |
7180 | (10^103423+173)/3 | 103423 | Robert Price | 05/2021 |
7181 | 2^343508-115229 | 103407 | Enzo Doria | 06/2015 |
7182 | (8766^26227-1)/8765 | 103404 | Serge Batalov | 06/2022 |
7183 | (509203*2^343491-1)/16147 | 103403 | Lelio R Paula | 05/2015 |
7184 | 3^216685-113056 | 103386 | Enzo Doria | 07/2014 |
7185 | 24829^14580+14580^24829 | 103382 | Hans Havermann | 08/2020 |
7186 | 91355!4+1024 | 103381 | Robert Price | 09/2019 |
7187 | 44^62903-43^62903 | 103379 | Jean-Louis Charton | 08/2012 |
7188 | 11^99262-20 | 103371 | Lelio R Paula | 12/2016 |
7189 | (509203*2^343357-1)/5 | 103366 | Lelio R Paula | 05/2015 |
7190 | (2^343363+3570)/2 | 103363 | Stefano Morozzi | 09/2020 |
7191 | 2^343356-2791889 | 103361 | Enzo Doria | 03/2016 |
7192 | (25*10^103360-241)/9 | 103361 | Robert Price | 05/2018 |
7193 | Phi(104989,10)/2939693 | 103350 | Maksym Voznyy | 09/2015 |
7194 | (371*33^68040-19)/32 | 103321 | Eric Chen | 05/2023 |
7195 | 24826^14511+14511^24826 | 103319 | Hans Havermann | 09/2020 |
7196 | 2^343182-171 | 103309 | Lelio R Paula | 08/2011 |
7197 | (23619^23619+23620^23620)/7187 | 103294 | David Broadhurst | 09/2009 |
7198 | (16487^24649-1)/(16487^157-1) | 103287 | Ryan Propper | 11/2023 |
7199 | (10680^25639-1)/10679 | 103285 | Serge Batalov | 06/2022 |
7200 | (7427^26683-1)/7426 | 103282 | Serge Batalov | 06/2022 |
7201 | 2^343079-1835611 | 103278 | Enzo Doria | 05/2015 |
7202 | 2^343063-1147 | 103273 | Yves Minet | 06/2013 |
7203 | 24741^14930+14930^24741 | 103271 | Hans Havermann | 09/2020 |
7204 | (16*10^103255-73)/3 | 103256 | Robert Price | 07/2020 |
7205 | (219^44119-1)/218 | 103256 | Serge Batalov | 06/2022 |
7206 | 9*6^132689+7 | 103254 | Lelio R Paula | 11/2014 |
7207 | 2^342979-18085 | 103247 | Enzo Doria | 05/2013 |
7208 | (16*10^103244-31)/3 | 103245 | Robert Price | 03/2019 |
7209 | 2^342966-16995 | 103244 | Lelio R Paula | 11/2016 |
7210 | 23797^21774+21774^23797 | 103230 | Hans Havermann | 09/2020 |
7211 | 25388^11637+11637^25388 | 103224 | Hans Havermann | 09/2020 |
7212 | (2^342876+2086)/2 | 103216 | Stefano Morozzi | 09/2020 |
7213 | (16*10^103214-31)/3 | 103215 | Robert Price | 03/2019 |
7215 | (37*10^103211+611)/9 | 103212 | Robert Price | 11/2018 |
7214 | (238*10^103210-1)/3 | 103212 | Robert Price | 04/2020 |
7216 | 5^147650+16 | 103203 | Lelio R Paula | 11/2016 |
7217 | gcd(Phi(852060,10),(10^42603+1)^3*(10^42603+1-10^21302)+(10^85206+10^42603)*(10^21302+1)+10^127809) | 103201 | Serge Batalov | 04/2015 |
7218 | 2^342817+2707067 | 103199 | Enzo Doria | 03/2016 |
7219 | 43^63177-42 | 103198 | Theodore Burton | 02/2007 |
7220 | 2^342805-21025 | 103195 | Enzo Doria | 06/2013 |
7221 | 24129^18890+18890^24129 | 103182 | Hans Havermann | 09/2020 |
7222 | (622*10^103171-1)/9 | 103173 | Robert Price | 11/2021 |
7223 | 2^342714+12285 | 103168 | Lelio R Paula | 11/2016 |
7224 | (2*10^103161-17)/3 | 103161 | Serge Batalov | 11/2022 |
7225 | 18^82178-4481 | 103156 | Enzo Doria | 03/2013 |
7226 | 2^342665-17349 | 103153 | Enzo Doria | 05/2013 |
7227 | 30408^2467+2467^30408 | 103150 | Hans Havermann | 09/2020 |
7228 | (5^147571-3^147571)/2 | 103148 | Kellen Shenton | 05/2022 |
7229 | (2^342615+3090)/2 | 103138 | Stefano Morozzi | 09/2020 |
7230 | 2^342612+175 | 103137 | Lelio R Paula | 08/2011 |
7231 | 5*2^342585-3 | 103130 | Lelio R Paula | 09/2014 |
7232 | (16*10^103127+77)/3 | 103128 | Robert Price | 03/2019 |
7233 | (2^342527+3774)/2 | 103111 | Stefano Morozzi | 02/2021 |
7234 | 2^342503-19209 | 103104 | Enzo Doria | 05/2013 |
7235 | (2^342484+2586)/2 | 103098 | Stefano Morozzi | 09/2020 |
7236 | 2^342476+51 | 103096 | Lelio R Paula | 08/2011 |
7237 | 2^342460-18885 | 103091 | Enzo Doria | 05/2013 |
7238 | (2^342442+862)/2 | 103086 | Stefano Morozzi | 02/2021 |
7239 | (194*10^103074-17)/3 | 103076 | Robert Price | 09/2020 |
7240 | 7^121968+82 | 103075 | Lelio R Paula | 10/2016 |
7241 | 2^342392-108863 | 103071 | Enzo Doria | 03/2014 |
7242 | (2^342389+806)/2 | 103070 | Stefano Morozzi | 01/2021 |
7243 | 3^216014+28 | 103065 | Lelio R Paula | 11/2016 |
7244 | 2^342353-108879 | 103059 | Enzo Doria | 03/2014 |
7245 | 10^103055+276081 | 103056 | Patrick De Geest | 12/2016 |
7246 | 10^103055-53 | 103055 | Lelio R Paula | 11/2016 |
7247 | (58*10^103046+419)/9 | 103047 | Robert Price | 05/2019 |
7248 | 7^121933+4 | 103046 | Lelio R Paula | 11/2014 |
7249 | (71*10^103028-143)/9 | 103029 | Robert Price | 10/2021 |
7250 | (2^342235+3618)/2 | 103023 | Stefano Morozzi | 09/2020 |