Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
4488089Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 265
TF below 2^76 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 19705000
B2 = 299546697450
ECM
DigitsB1Curves
2550000245 / 280
Estimated T-Level: 24.4 ⓘ
LL
StatusDateUserResidueShift
Verified1998-06-28Ethan Hansen66F68C033A0180810
Verified1999-12-15Jon Shickel66F68C033A0180812220993
History
DateUserTypeResult
2025-01-19Jason LynchNF-PM1
B1=19705000, B2=299546697450
2024-11-17TheJudgerNF
no factor from 2^72 to 2^73
2024-11-17TheJudgerNF
no factor from 2^71 to 2^72
2021-08-25LaurVNF-PM1
B1=10712789, B2=521607127
2021-08-09SRBaseNF
no factor from 2^70 to 2^71
2021-07-31axnNF
no factor from 2^69 to 2^70
2021-06-07TJAOINF
no factor from 2^68 to 2^69
2021-04-26Architects CubedNF-PM1
B1=1500000, B2=114000000
2018-06-24ramgeisNF
no factor from 2^67 to 2^68
2018-06-24ramgeisNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-06-26snme2pm1NF
no factor from 2^65 to 2^66
2014-10-02monstNF
no factor from 2^64 to 2^65
2014-10-02JayderNF
no factor from 2^63 to 2^64
2012-11-10Squeeky_SquirrelNF-PM1
B1=290000, B2=7540000, E=12
2012-02-10GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-09-26markrNF
no factor from 2^61 to 2^62
2009-08-07Carsten KossendeyNF-PM1
B1=25000, B2=362500