Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
1852637Composite: proven not-prime with both PRP and Lucas-Lehmer tests
TF
No factors below 268
TF target 261
TF below 2^81 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 25000000
B2 = 69189473430
ECM
DigitsB1Curves
2550000280 / 280
30250000106 / 640
Estimated T-Level: 25.8
LL
StatusDateUserResidueShift
VerifiedRhoads Hollowell5EF29E6ED5A6CA430
VerifiedSteve Potocny5EF29E6ED5A6CA430
Verified2015-07-16MadPoo5EF29E6ED5A6CA431644047
PRP
StatusDateUserResidueShiftTypeBase
Verified2025-09-02KrieselE052EADB246C65E8013
History
DateUserTypeResult
2025-09-03Carlos PinhoCERT
PRP Certification
CERT proof power = 6
Proof certified good
2025-09-02KrieselC-PRP
E052EADB246C65E8
PRP proof power = 6
PRP: Verified
Proof certified good
2023-12-07kurlyNF-PM1
B1=25000000, B2=69189473430
2022-10-31masserNF-PP1
Start=2/7, B1=800000, B2=25600000
2022-10-29masserNF-PP1
Start=6/5, B1=400000, B2=10800000
2022-10-27masserNF-PP1
Start=144/47, B1=200000, B2=4400000
2022-07-24RichD0NF-PM1
B1=40000000, B2=12840039072
2019-06-10TJAOINF
no factor from 2^67 to 2^68
2018-10-25JossNF-PM1
B1=1852637, B2=203790070, E=12
2018-09-24JossNF-PM1
B1=1852637, B2=185263700, E=12
2018-06-11TJAOINF
no factor from 2^66 to 2^67
2018-02-25JossNF-PM1
B1=1852637, B2=99532800, E=12
2018-02-09JossNF-PM1
B1=1852637, B2=49766400, E=12
2018-01-18JossNF-PM1
B1=1852637, B2=24883200, E=12
2017-02-11JossNF-PM1
B1=1244160, B2=12441600, E=12
2017-01-11JossNF-PM1
B1=1036800
2016-12-18JossNF-PM1
B1=720000
2016-10-29JossNF-PM1
B1=864000
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2016-02-23Mark RoseNF
no factor from 2^61 to 2^62
2015-10-07Bruno VictalNF-PM1
B1=500000, B2=15000000, E=12
2015-09-08ramgeisNF
no factor from 2^65 to 2^66
2015-07-16MadPooC-LL
5EF29E6ED5A6CA43
2015-05-05snme2pm1NF
no factor from 2^64 to 2^65
2015-05-05snme2pm1NF
no factor from 2^63 to 2^64
2012-01-04markrNF-PM1
B1=275000, B2=6000000, E=12
2011-01-21GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-04-12Architects CubedNF
no factor from 2^60 to 2^61