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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
4464937Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 265
TF below 2^80 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 7500000
B2 = 12441625350
ECM
DigitsB1Curves
2550000280 / 280
3025000057 / 640
Estimated T-Level: 25.4
LL
StatusDateUserResidueShift
Verified1998-03-31Bernd-Uwe Runge5988C906C2AB42F60
Verified2000-03-08Thomas Traber5988C906C2AB42F61323626
History
DateUserTypeResult
2024-11-17TheJudgerNF
no factor from 2^72 to 2^73
2024-11-17TheJudgerNF
no factor from 2^71 to 2^72
2022-08-08xssNF-PM1
B1=7500000, B2=12441625350
2021-08-22SRBaseNF
no factor from 2^70 to 2^71
2021-08-17SRBaseNF
no factor from 2^69 to 2^70
2021-07-18MadPooNF
no factor from 2^68 to 2^69
2021-04-24Architects CubedNF-PM1
B1=222000, B2=13874000
2018-06-25ramgeisNF
no factor from 2^67 to 2^68
2018-06-25ramgeisNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-06-25snme2pm1NF
no factor from 2^65 to 2^66
2014-09-21monstNF
no factor from 2^64 to 2^65
2014-09-20JayderNF
no factor from 2^63 to 2^64
2012-10-16Squeeky_SquirrelNF-PM1
B1=290000, B2=7467500, E=12
2012-02-03GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-10-11markrNF
no factor from 2^61 to 2^62
2009-07-22Carsten KossendeyNF-PM1
B1=25000, B2=362500