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 | 5^148014-24 | 103458 | Lelio R Paula | 11/2016 |
7002 | 28316^4503+4503^28316 | 103453 | Hans Havermann | 09/2020 |
7003 | (22*10^103450+53)/3 | 103451 | Robert Price | 07/2019 |
7004 | 2^343604+9931 | 103436 | Yves Minet | 01/2011 |
7005 | 2^343601-21189 | 103435 | Enzo Doria | 06/2013 |
7006 | (10^103423+173)/3 | 103423 | Robert Price | 05/2021 |
7007 | 2^343508-115229 | 103407 | Enzo Doria | 06/2015 |
7008 | (8766^26227-1)/8765 | 103404 | Serge Batalov | 06/2022 |
7009 | (509203*2^343491-1)/16147 | 103403 | Lelio R Paula | 05/2015 |
7010 | 3^216685-113056 | 103386 | Enzo Doria | 07/2014 |
7011 | 24829^14580+14580^24829 | 103382 | Hans Havermann | 08/2020 |
7012 | 91355!4+1024 | 103381 | Robert Price | 09/2019 |
7013 | 44^62903-43^62903 | 103379 | Jean-Louis Charton | 08/2012 |
7014 | 11^99262-20 | 103371 | Lelio R Paula | 12/2016 |
7015 | (509203*2^343357-1)/5 | 103366 | Lelio R Paula | 05/2015 |
7016 | (2^343363+3570)/2 | 103363 | Stefano Morozzi | 09/2020 |
7017 | 2^343356-2791889 | 103361 | Enzo Doria | 03/2016 |
7018 | (25*10^103360-241)/9 | 103361 | Robert Price | 05/2018 |
7019 | Phi(104989,10)/2939693 | 103350 | Maksym Voznyy | 09/2015 |
7020 | (371*33^68040-19)/32 | 103321 | Eric Chen | 05/2023 |
7021 | 24826^14511+14511^24826 | 103319 | Hans Havermann | 09/2020 |
7022 | 2^343182-171 | 103309 | Lelio R Paula | 08/2011 |
7023 | (23619^23619+23620^23620)/7187 | 103294 | David Broadhurst | 09/2009 |
7024 | (16487^24649-1)/(16487^157-1) | 103287 | Ryan Propper | 11/2023 |
7025 | (10680^25639-1)/10679 | 103285 | Serge Batalov | 06/2022 |
7026 | (7427^26683-1)/7426 | 103282 | Serge Batalov | 06/2022 |
7027 | 2^343079-1835611 | 103278 | Enzo Doria | 05/2015 |
7028 | 2^343063-1147 | 103273 | Yves Minet | 06/2013 |
7029 | 24741^14930+14930^24741 | 103271 | Hans Havermann | 09/2020 |
7030 | (16*10^103255-73)/3 | 103256 | Robert Price | 07/2020 |
7031 | (219^44119-1)/218 | 103256 | Serge Batalov | 06/2022 |
7032 | 9*6^132689+7 | 103254 | Lelio R Paula | 11/2014 |
7033 | 2^342979-18085 | 103247 | Enzo Doria | 05/2013 |
7034 | (16*10^103244-31)/3 | 103245 | Robert Price | 03/2019 |
7035 | 2^342966-16995 | 103244 | Lelio R Paula | 11/2016 |
7036 | 23797^21774+21774^23797 | 103230 | Hans Havermann | 09/2020 |
7037 | 25388^11637+11637^25388 | 103224 | Hans Havermann | 09/2020 |
7038 | (2^342876+2086)/2 | 103216 | Stefano Morozzi | 09/2020 |
7039 | (16*10^103214-31)/3 | 103215 | Robert Price | 03/2019 |
7041 | (37*10^103211+611)/9 | 103212 | Robert Price | 11/2018 |
7040 | (238*10^103210-1)/3 | 103212 | Robert Price | 04/2020 |
7042 | 5^147650+16 | 103203 | Lelio R Paula | 11/2016 |
7043 | 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 |
7044 | 2^342817+2707067 | 103199 | Enzo Doria | 03/2016 |
7045 | 43^63177-42 | 103198 | Theodore Burton | 02/2007 |
7046 | 2^342805-21025 | 103195 | Enzo Doria | 06/2013 |
7047 | 24129^18890+18890^24129 | 103182 | Hans Havermann | 09/2020 |
7048 | (622*10^103171-1)/9 | 103173 | Robert Price | 11/2021 |
7049 | 2^342714+12285 | 103168 | Lelio R Paula | 11/2016 |
7050 | (2*10^103161-17)/3 | 103161 | Serge Batalov | 11/2022 |
7051 | 18^82178-4481 | 103156 | Enzo Doria | 03/2013 |
7052 | 2^342665-17349 | 103153 | Enzo Doria | 05/2013 |
7053 | 30408^2467+2467^30408 | 103150 | Hans Havermann | 09/2020 |
7054 | (5^147571-3^147571)/2 | 103148 | Kellen Shenton | 05/2022 |
7055 | (2^342615+3090)/2 | 103138 | Stefano Morozzi | 09/2020 |
7056 | 2^342612+175 | 103137 | Lelio R Paula | 08/2011 |
7057 | 5*2^342585-3 | 103130 | Lelio R Paula | 09/2014 |
7058 | (16*10^103127+77)/3 | 103128 | Robert Price | 03/2019 |
7059 | (2^342527+3774)/2 | 103111 | Stefano Morozzi | 02/2021 |
7060 | 2^342503-19209 | 103104 | Enzo Doria | 05/2013 |
7061 | (2^342484+2586)/2 | 103098 | Stefano Morozzi | 09/2020 |
7062 | 2^342476+51 | 103096 | Lelio R Paula | 08/2011 |
7063 | 2^342460-18885 | 103091 | Enzo Doria | 05/2013 |
7064 | (2^342442+862)/2 | 103086 | Stefano Morozzi | 02/2021 |
7065 | (194*10^103074-17)/3 | 103076 | Robert Price | 09/2020 |
7066 | 7^121968+82 | 103075 | Lelio R Paula | 10/2016 |
7067 | 2^342392-108863 | 103071 | Enzo Doria | 03/2014 |
7068 | (2^342389+806)/2 | 103070 | Stefano Morozzi | 01/2021 |
7069 | 3^216014+28 | 103065 | Lelio R Paula | 11/2016 |
7070 | 2^342353-108879 | 103059 | Enzo Doria | 03/2014 |
7071 | 10^103055+276081 | 103056 | Patrick De Geest | 12/2016 |
7072 | 10^103055-53 | 103055 | Lelio R Paula | 11/2016 |
7073 | (58*10^103046+419)/9 | 103047 | Robert Price | 05/2019 |
7074 | 7^121933+4 | 103046 | Lelio R Paula | 11/2014 |
7075 | (71*10^103028-143)/9 | 103029 | Robert Price | 10/2021 |
7076 | (2^342235+3618)/2 | 103023 | Stefano Morozzi | 09/2020 |
7077 | 19^80560-68 | 103017 | Lelio R Paula | 10/2016 |
7078 | 2^342209+76607 | 103016 | Enzo Doria | 05/2016 |
7080 | 328^40945+40945^328 | 103013 | Norbert Schneider | 12/2014 |
7079 | 12^95454-91 | 103013 | Lelio R Paula | 10/2016 |
7081 | 25833^9716+9716^25833 | 103009 | Hans Havermann | 01/2019 |
7082 | (893*10^103004+7)/9 | 103006 | Robert Price | 06/2021 |
7083 | (1475^32503-1)/1474 | 102993 | Serge Batalov | 06/2022 |
7084 | 65^56809-64^56809 | 102990 | Robert Price | 08/2013 |
7085 | 5^147338-6 | 102985 | Lelio R Paula | 11/2014 |
7086 | 2^342084-112739 | 102978 | Enzo Doria | 06/2014 |
7087 | 9*6^132330+7 | 102974 | Lelio R Paula | 11/2014 |
7088 | 2^342034-16737 | 102963 | Enzo Doria | 05/2013 |
7089 | (9787*2^342011-1)/25 | 102959 | Lelio R Paula | 05/2015 |
7090 | (3^215802-5)/124343756 | 102956 | Lelio R Paula | 12/2013 |
7091 | 2^341991-17421 | 102950 | Enzo Doria | 05/2013 |
7092 | 2^341969-112225 | 102943 | Enzo Doria | 06/2014 |
7093 | (9787*2^341864-1)/3 | 102915 | Lelio R Paula | 05/2015 |
7094 | 2^341859+1869413 | 102910 | Enzo Doria | 05/2016 |
7095 | 10^102909+61 | 102910 | Lelio R Paula | 11/2016 |
7096 | 10^102909-67049 | 102909 | Patrick De Geest | 12/2016 |
7097 | 23814^20935+20935^23814 | 102898 | Hans Havermann | 02/2019 |
7098 | 28345^4264+4264^28345 | 102888 | Hans Havermann | 02/2019 |
7099 | 25665^10204+10204^25665 | 102886 | Hans Havermann | 02/2019 |
7100 | 26288^8181+8181^26288 | 102860 | Hans Havermann | 02/2019 |
7101 | 2^341659+1836773 | 102850 | Enzo Doria | 03/2016 |
7102 | 2^341608-110639 | 102835 | Enzo Doria | 05/2014 |
7103 | 10^102824+49 | 102825 | Lelio R Paula | 11/2016 |
7104 | 10^102824-168011 | 102824 | Patrick De Geest | 12/2016 |
7105 | 11^98708-8 | 102794 | Lelio R Paula | 10/2016 |
7106 | 2^341466+4429 | 102792 | Lelio R Paula | 09/2011 |
7107 | 2^341460-107 | 102790 | Lelio R Paula | 08/2011 |
7108 | (2^341388+47)/21014943 | 102761 | Lelio R Paula | 12/2013 |
7109 | 2^341355+21 | 102759 | Lelio R Paula | 08/2011 |
7110 | (6496^26947-1)/6495 | 102736 | Serge Batalov | 06/2022 |
7111 | 2^341246+40755 | 102726 | Lelio R Paula | 11/2016 |
7112 | (2^341256-5)/991699 | 102723 | Lelio R Paula | 12/2013 |
7113 | 7^121547+78 | 102720 | Lelio R Paula | 10/2016 |
7114 | 2^341223-461197 | 102719 | Enzo Doria | 06/2015 |
7115 | 27838^4893+4893^27838 | 102711 | Hans Havermann | 03/2019 |
7117 | 2^341190-20577 | 102709 | Enzo Doria | 06/2013 |
7116 | (27*2^341212+1)/84674449 | 102709 | Lelio R Paula | 12/2013 |
7118 | (25*10^102698+77)/3 | 102699 | Robert Price | 09/2022 |
7119 | 6^131976-65 | 102698 | Lelio R Paula | 10/2016 |
7120 | 2^341134+2533 | 102692 | Henri Lifchitz | 09/2005 |
7121 | 13^92184-54 | 102688 | Lelio R Paula | 10/2016 |
7122 | 2^341116-20873 | 102687 | Enzo Doria | 06/2013 |
7123 | 2^341094-19953 | 102680 | Enzo Doria | 06/2013 |
7124 | 23761^20950+20950^23761 | 102676 | Hans Havermann | 03/2019 |
7126 | 2^341053+129 | 102668 | Lelio R Paula | 08/2011 |
7125 | (4724^27943-1)/4723 | 102668 | Serge Batalov | 06/2022 |
7128 | (31*2^341006-1)/3 | 102655 | Lelio R Paula | 03/2014 |
7127 | 7^121471+94 | 102655 | Lelio R Paula | 10/2016 |
7130 | 2^341004-173 | 102653 | Lelio R Paula | 08/2011 |
7129 | 20^78901+3 | 102653 | Lelio R Paula | 10/2016 |
7131 | (2^341001+1674)/2 | 102652 | Stefano Morozzi | 09/2020 |
7132 | 5^146853-52 | 102646 | Lelio R Paula | 10/2016 |
7133 | 2^340969-216931 | 102642 | Enzo Doria | 05/2014 |
7134 | 122^49196+121 | 102641 | Norbert Schneider | 10/2018 |
7135 | 2^340952+1870021 | 102637 | Enzo Doria | 05/2016 |
7136 | 5*2^340940-3 | 102634 | Lelio R Paula | 08/2014 |
7137 | (6^131891+1)/7 | 102631 | Paul Bourdelais | 01/2010 |
7138 | (11*10^102629-23)/3 | 102630 | Robert Price | 09/2021 |
7139 | 3^215094+5*2^215094 | 102626 | Jon Grantham | 08/2023 |
7140 | 25876^9239+9239^25876 | 102615 | Hans Havermann | 02/2019 |
7141 | (4*10^102612+83)/3 | 102613 | Robert Price | 02/2018 |
7142 | 75^54717+74 | 102598 | Norbert Schneider | 01/2015 |
7143 | (17*10^102597+13)/3 | 102598 | Robert Price | 01/2019 |
7144 | 2^340806-20393 | 102593 | Enzo Doria | 06/2013 |
7145 | (2^340790+5)/138267 | 102583 | Lelio R Paula | 12/2013 |
7146 | 6^131821+77 | 102577 | Lelio R Paula | 10/2016 |
7147 | (203*10^102561-11)/3 | 102563 | Robert Price | 12/2020 |
7148 | 2^340688-29 | 102558 | Henri Lifchitz | 05/2005 |
7149 | 2^340685-109101 | 102557 | Enzo Doria | 04/2014 |
7150 | 65^56567-64 | 102552 | Norbert Schneider | 11/2014 |
7151 | 26230^8121+8121^26230 | 102550 | Hans Havermann | 03/2019 |
7152 | (64*10^102547+161)/9 | 102548 | Robert Price | 08/2022 |
7153 | (8*10^102541+49)/3 | 102542 | Robert Price | 05/2020 |
7154 | (536*10^102533-23)/9 | 102535 | Robert Price | 02/2020 |
7155 | 2^340547-108897 | 102515 | Enzo Doria | 03/2014 |
7156 | (2^340536+778)/2 | 102512 | Stefano Morozzi | 09/2020 |
7157 | 25592^10119+10119^25592 | 102500 | Hans Havermann | 02/2019 |
7158 | (5*10^102492-23)/9 | 102492 | Serge Batalov | 11/2022 |
7159 | 7^121268+82 | 102484 | Lelio R Paula | 10/2016 |
7160 | (6883*2^340443-1)/162401 | 102483 | Lelio R Paula | 05/2015 |
7161 | 2^340434-5955 | 102481 | Lelio R Paula | 11/2016 |
7162 | (7*10^102480-19)/3 | 102481 | Robert Price | 10/2020 |
7163 | (2^340381+47)/7 | 102465 | Lelio R Paula | 12/2013 |
7164 | 111^50095+110 | 102461 | Norbert Schneider | 04/2017 |
7165 | 2^340291-20301 | 102438 | Enzo Doria | 06/2013 |
7166 | 12^94915+89 | 102431 | Lelio R Paula | 10/2016 |
7167 | (106*10^102422+17)/3 | 102424 | Robert Price | 04/2021 |
7168 | 24466^15349+15349^24466 | 102417 | Hans Havermann | 03/2019 |
7169 | 2^340212+111546435 | 102415 | Paul Bourdelais | 10/2021 |
7170 | 2^340208-20373 | 102413 | Enzo Doria | 06/2013 |
7171 | 6^131598-17273 | 102404 | Enzo Doria | 02/2013 |
7172 | (2^340132+1182)/2 | 102390 | Stefano Morozzi | 09/2020 |
7173 | (2^340133+1166)/2 | 102390 | Stefano Morozzi | 09/2020 |
7174 | 2^340115-21181 | 102385 | Enzo Doria | 06/2013 |
7175 | (55459*2^340090+1)/1591 | 102379 | Lelio R Paula | 07/2014 |
7176 | (2^340064+3630)/2 | 102370 | Stefano Morozzi | 09/2020 |
7177 | 9348*31^68638+13 | 102369 | Eric Chen | 04/2024 |
7178 | 89^52511-88^52511 | 102365 | Robert Price | 06/2015 |
7179 | 3^214539-112756 | 102362 | Enzo Doria | 07/2014 |
7180 | 23159^23450-23450^23159 | 102353 | Norbert Schneider | 12/2019 |
7181 | 2^340000-19877 | 102351 | Enzo Doria | 06/2013 |
7182 | 2^339990-114845 | 102348 | Enzo Doria | 05/2015 |
7183 | (3^214516-2)/51383 | 102346 | Lelio R Paula | 12/2013 |
7184 | 20^78661-99 | 102341 | Lelio R Paula | 09/2016 |
7186 | 2^339951-19585 | 102336 | Enzo Doria | 05/2013 |
7185 | (17*10^102335-167)/3 | 102336 | Robert Price | 05/2022 |
7187 | (13*2^339943+1)/45 | 102333 | Lelio R Paula | 12/2013 |
7188 | (236282#+121441)/(121441*25499429) | 102332 | Makoto Morimoto | 08/2020 |
7189 | 5*10^102323-91 | 102324 | Robert Price | 03/2021 |
7191 | 2^339889+29327 | 102317 | Yves Minet | 06/2010 |
7190 | (167*10^102315-17)/3 | 102317 | Robert Price | 03/2020 |
7192 | 26348^7641+7641^26348 | 102314 | Hans Havermann | 03/2019 |
7193 | Phi(239414,10)/6333218543 | 102303 | Makoto Kamada | 08/2019 |
7194 | 2^339834-109493 | 102301 | Enzo Doria | 04/2014 |
7195 | (16*10^102299-19)/3 | 102300 | Robert Price | 02/2019 |
7196 | (11^98221-5^98221)/6 | 102286 | Robert Price | 01/2013 |
7197 | 3^214365+1820 | 102279 | Lelio R Paula | 10/2016 |
7198 | 31978^1579+1579^31978 | 102278 | Hans Havermann | 03/2019 |
7199 | (89*10^102262-467)/9 | 102263 | Robert Price | 04/2022 |
7200 | (11*2^339705-1)/183 | 102261 | Lelio R Paula | 03/2014 |
7201 | 2^339694-16995 | 102259 | Lelio R Paula | 09/2016 |
7202 | (56*10^102255+691)/9 | 102256 | Robert Price | 05/2019 |
7203 | 122^49008+121 | 102249 | Norbert Schneider | 10/2018 |
7204 | (2^339652+3178)/2 | 102246 | Stefano Morozzi | 09/2020 |
7205 | 7^120985-38 | 102245 | Lelio R Paula | 10/2016 |
7206 | 10^102244+122961 | 102245 | Patrick De Geest | 12/2016 |
7207 | 10^102244-27 | 102244 | Lelio R Paula | 09/2016 |
7208 | 7^120982-62 | 102242 | Lelio R Paula | 10/2016 |
7209 | (2^339640+2670)/2 | 102242 | Stefano Morozzi | 09/2020 |
7210 | 4*6^131382-5 | 102236 | Lelio R Paula | 11/2014 |
7211 | (2^339607+3290)/2 | 102232 | Stefano Morozzi | 02/2021 |
7212 | 2^339586-1091 | 102226 | Yves Minet | 11/2012 |
7213 | 11^98161-3072000 | 102225 | Enzo Doria | 12/2012 |
7214 | 9*7^120961-4 | 102225 | Lelio R Paula | 11/2014 |
7215 | 5*3^214250+2 | 102224 | Serge Batalov | 10/2010 |
7216 | 12^94713-59 | 102213 | Lelio R Paula | 10/2016 |
7217 | 12^94705+89 | 102204 | Lelio R Paula | 10/2016 |
7218 | 2^339407-177 | 102172 | Lelio R Paula | 08/2011 |
7219 | 4*10^102163-57 | 102164 | Robert Price | 10/2018 |
7220 | 2^339355+65 | 102157 | Lelio R Paula | 07/2011 |
7221 | (28*10^102142-31)/3 | 102143 | Robert Price | 12/2019 |
7222 | (2^339323+47)/880715 | 102141 | Lelio R Paula | 12/2013 |
7223 | (2^339268+1758)/2 | 102130 | Stefano Morozzi | 09/2020 |
7224 | s(178551) | 102122 | Robert Price | 05/2020 |
7225 | (797*10^102112-23)/9 | 102114 | Robert Price | 01/2022 |
7226 | (5*10^102107+7)/3 | 102108 | Tyler Busby | 02/2023 |
7227 | (2^339175+2790)/2 | 102102 | Stefano Morozzi | 02/2021 |
7229 | 2^339168+21 | 102100 | Lelio R Paula | 07/2011 |
7230 | 2^339167-108807 | 102100 | Enzo Doria | 03/2014 |
7228 | (2^339169+42)/2 | 102100 | Stefano Morozzi | 09/2020 |
7231 | 2^339156+163 | 102097 | Lelio R Paula | 08/2011 |
7232 | (2^339149+746)/2 | 102094 | Stefano Morozzi | 09/2020 |
7233 | (25*10^102076-67)/3 | 102077 | Robert Price | 06/2019 |
7234 | 2^339081-4543 | 102074 | Yves Minet | 03/2019 |
7235 | (3435^28867-1)/3434 | 102069 | Serge Batalov | 06/2022 |
7236 | 2*10^102062+77 | 102063 | Robert Price | 08/2020 |
7238 | 24327^15668+15668^24327 | 102053 | Hans Havermann | 02/2019 |
7237 | 10^102052+66793 | 102053 | Patrick De Geest | 09/2022 |
7239 | 10^102052-7000001 | 102052 | Robert Price | 06/2021 |
7240 | 10^102052-618623 | 102052 | Patrick De Geest | 09/2022 |
7241 | 2^339000-175635 | 102050 | Stefano Morozzi | 12/2021 |
7242 | 2^339000-151667 | 102050 | Stefano Morozzi | 12/2021 |
7243 | 2^338999+79289 | 102049 | Stefano Morozzi | 01/2022 |
7244 | 2^338998-63897 | 102049 | Stefano Morozzi | 12/2022 |
7245 | 2^338997+99659 | 102049 | Stefano Morozzi | 02/2023 |
7246 | 2^338994+188757 | 102048 | Stefano Morozzi | 05/2022 |
7247 | 2^338995+70785 | 102048 | Stefano Morozzi | 11/2022 |
7248 | 2^338994-12183 | 102048 | Stefano Morozzi | 12/2022 |
7249 | 2^338992+181591 | 102047 | Stefano Morozzi | 01/2022 |
7250 | 2^338992+136171 | 102047 | Stefano Morozzi | 03/2022 |