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

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Exponent Range:










MnStatusDetails
1508389TF
No factors below 269
TF target 261
TF below 2^81 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 21800000
B2 = 83933699850
ECM
DigitsB1Curves
2550000280 / 280
30250000103 / 640
Estimated T-Level: 25.8 ⓘ
LL
StatusDateUserResidueShift
VerifiedRobert L EinkaufDC758F1893F97B4D0
Verified1999-02-21Adam MonteiroDC758F1893F97B4D467918
Verified2015-07-21MadPooDC758F1893F97B4D259741
History
DateUserTypeResult
2023-08-31Sid & AndyNF-PM1
B1=21800000, B2=83933699850
2023-08-11JossNF-PM1
B1=10000000, B2=18282567030
2023-07-03JossNF-PM1
B1=10000000, B2=8830608150
2023-03-14JossNF-PM1
B1=10000000, B2=4104628710
2022-11-17JossNF-PM1
B1=10000000, B2=1741677630
2019-11-04mnd9NF
no factor from 2^68 to 2^69
2018-06-06ramgeisNF
no factor from 2^67 to 2^68
2018-03-19TJAOINF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^58 to 2^61
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2016-02-23Mark RoseNF
no factor from 2^61 to 2^62
2015-09-27ramgeisNF
no factor from 2^65 to 2^66
2015-07-21MadPooC-LL
DC758F1893F97B4D
2015-01-22VictordeHollanderNF-PM1
B1=10000000, B2=200000000, E=12
2015-01-13snme2pm1NF
no factor from 2^64 to 2^65
2015-01-13snme2pm1NF
no factor from 2^63 to 2^64
2013-11-16David CampeauNF-PM1
B1=935000, B2=27115000, E=12
2011-01-26James HeinrichNF-PM1
B1=80000, B2=1280000, E=6
2010-04-04GrunwalderGIMPNF
no factor from 2^1 to 2^63