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
1849609Composite: 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
VerifiedRobert ClarkE6BD9D5426B965840
Verified1999-01-10Francis UnsonE6BD9D5426B965841178518
Verified2015-07-16MadPooE6BD9D5426B965841141531
PRP
StatusDateUserResidueShiftTypeBase
Verified2025-09-02Kriesel40E36B4ABFF70234013
History
DateUserTypeResult
2025-09-03Carlos PinhoCERT
PRP Certification
CERT proof power = 6
Proof certified good
2025-09-02KrieselC-PRP
40E36B4ABFF70234
PRP proof power = 6
PRP: Verified
Proof certified good
2023-12-02kurlyNF-PM1
B1=25000000, B2=69189473430
2023-06-09JossNF-PM1
B1=2384605, B2=8777285790
2023-01-09JossNF-PM1
B1=2384605, B2=1644953310
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=122/71, B1=200000, B2=4400000
2019-06-17TJAOINF
no factor from 2^67 to 2^68
2018-07-02JossNF-PM1
B1=2384605, B2=184960900, E=12
2018-02-22JossNF-PM1
B1=2384605, B2=85845780, E=12
2017-09-01TJAOINF
no factor from 2^66 to 2^67
2017-06-13JossNF-PM1
B1=2384605, B2=42922890, E=12
2017-03-31JossNF-PM1
B1=1987171, B2=19871710, E=12
2017-03-28JossNF-PM1
B1=1655976, B2=16559760, E=12
2017-03-20JossNF-PM1
B1=1379980, B2=13799800, E=12
2017-01-21JossNF-PM1
B1=1149984
2016-10-29JossNF-PM1
B1=958320
2016-10-07JossNF-PM1
B1=500000, B2=39600000, E=6
2016-09-30JossNF-PM1
B1=500000, B2=33000000, E=6
2016-09-01JossNF-PM1
B1=500000, B2=30000000, E=12
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2016-02-23Mark RoseNF
no factor from 2^61 to 2^62
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2015-10-06Bruno VictalNF-PM1
B1=500000, B2=15000000, E=12
2015-09-08ramgeisNF
no factor from 2^65 to 2^66
2015-07-16MadPooC-LL
E6BD9D5426B96584
2015-04-28snme2pm1NF
no factor from 2^64 to 2^65
2015-04-28snme2pm1NF
no factor from 2^63 to 2^64
2012-01-02markrNF-PM1
B1=275000, B2=6000000, E=12
2011-01-21GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-04-09Architects CubedNF
no factor from 2^60 to 2^61