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
7639277Factored
FactorDigitsBitsDate
15304484791649199619809115058211965697916142136.82023-02-21 19:48:08
ECM
DigitsB1Curves
25500006 / 280
Estimated T-Level: 20.1 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)1999-11-24Jim Perkins4B16E9C4BEA0A0B33839618
Verified (Factored)2002-12-02Ars Technica Team Prime Rib4B16E9C4BEA0A0B3745080
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-02-27Funky Waddle2E63F37FD372399A1295436153
P-1 factors
DateFactorB1B2
2023-02-2115304484791649199619809115058211965697916130000009447487140
History
DateUserTypeResult
2023-02-27WeakForceBosonCERT
PRP Certification
Proof certified good
2023-02-27Funky WaddleC-PRP
M7639277/153044847916491996198091150582119656979161 : 2E63F37FD372399A
PRP proof power = 8
PRP: Verified
Proof certified good
2023-02-21DRobinsonPEF-PM1
Factor: 153044847916491996198091150582119656979161 / (P-1, B1=3000000, B2=9447487140)
2021-05-01-Anonymous-NF
no factor from 2^72 to 2^73
2021-05-01-Anonymous-NF
no factor from 2^71 to 2^72
2021-04-08-Anonymous-NF
no factor from 2^70 to 2^71
2021-04-08-Anonymous-NF
no factor from 2^69 to 2^70
2020-05-23GdSNF-PM1
B1=310809, B2=6216181, E=12
2020-03-06TJAOINF
no factor from 2^68 to 2^69
2018-07-31ramgeisNF
no factor from 2^67 to 2^68
2016-09-14Gordon SpenceNF
no factor from 2^66 to 2^67
2015-06-09VictordeHollanderNF
no factor from 2^65 to 2^66
2013-12-06David CampeauNF
no factor from 2^64 to 2^65
2013-10-11NesowaNF
no factor from 2^63 to 2^64
2012-07-26NesowaNF-PM1
B1=95000, B2=1757500, E=6