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
772159Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 268
TF target 244
TF below 2^86 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 104057000
B2 = 2926162058820
ECM
DigitsB1Curves
2550000280 / 280
30250000321 / 640
Estimated T-Level: 27.5
LL
StatusDateUserResidueShift
VerifiedDavid Slowinski39F90
VerifiedVincent Renardias3DA7A5595E4579F90
Verified2002-10-26Mark Outhier3DA7A5595E4579F9453423
Verified2015-04-11MadPoo3DA7A5595E4579F95582
Assigned
AssignedUserWork TypeStage% DoneUpdatedExpired
2025-08-18-Anonymous-factor ECM small0.00 % 2025-08-18
History
DateUserTypeResult
2025-07-02Jason LynchNF-PM1
B1=104057000, B2=2926162058820
2024-06-15JossNF-PM1
B1=10000000, B2=113119406400
2024-01-20JossNF-PM1
B1=8829724, B2=22305383100
2023-11-03JossNF-PM1
B1=4414863, B2=8354753550
2023-07-14JossNF-PM1
B1=1551000, B2=31171440300
2023-04-29masserNF-PP1
Start=6/5, B1=6000000, B2=276000000
2023-04-04masserNF-PP1
Start=2/7, B1=6000000, B2=282000000
2023-04-03masserNF-PP1
Start=126/37, B1=6000000, B2=276000000
2023-03-15JossNF-PM1
B1=1000000, B2=13912959060
2022-11-23JossNF-PM1
B1=1551000, B2=4929814890
2022-03-12Gordon SpenceNF
no factor from 2^67 to 2^68
2020-03-31YxinityNF
no factor from 2^66 to 2^67
2018-03-06Smok_bmv NF
no factor from 2^65 to 2^66
2016-03-20lycornNF
no factor from 2^64 to 2^65
2015-11-22Sid & AndyNF-PM1
B1=7721590, B2=231647700, E=12
2015-10-23Gordon SpenceNF
no factor from 2^63 to 2^64
2015-10-23Gordon SpenceNF
no factor from 2^62 to 2^63
2015-04-11MadPooC-LL
3DA7A5595E4579F9
2015-03-06NRNF
no factor from 2^61 to 2^62
2013-10-26David CampeauNF-PM1
B1=1550000, B2=52700000, E=12
2012-07-21JossNF-PM1
B1=1544318
2011-12-10JossNF-PM1
B1=929093
2011-08-24JossNF-PM1
B1=464546
2011-07-10JossNF-PM1
B1=278728
2010-06-26Architects CubedNF
no factor from 2^60 to 2^61
2008-10-12Sturle SundeNF
no factor from 2^59 to 2^60
2008-10-12Sturle SundeNF
no factor from 2^58 to 2^59