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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MnStatusDetails
6544177Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
368880693440316058972065.02012-02-09 12:15:36
ECM
DigitsB1Curves
25500003 / 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)1999-11-10Matt HorbalF5E24C6F68B13D384769994
Verified (Factored)2001-05-13Robin TremblayF5E24C6F68B13D382351525
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-12-26Chun sung sooC2B6457A72CC982B1501764953
Verified2018-10-16Oliver KruseC2B6457A72CC982B199170253
History
DateUserTypeResult
2025-01-10Stef42NF-PM1
B1=2109000, B2=5069197980
2023-05-11This -Anonymous-NF-PM1
B1=100000, B2=2000000, E=6
2018-10-16Oliver KruseC-PRP
M6544177/36888069344031605897 : C2B6457A72CC982B
PRP: Verified
PRP without proof (not generated)
2017-12-26Chun sung sooC-PRP
M6544177/36888069344031605897 : C2B6457A72CC982B
PRP: Verified
PRP without proof (not generated)
2012-02-09sannerud.comF-ECM
Factor: 36888069344031605897