Marin Mersenne 2^P-1
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MnStatusDetails
4669961Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
61678068386130654231962.42011-12-28 22:52:27
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)1998-09-27Johannes Stahl3E851BA4BFE0B24A0
Verified (Factored)2000-03-22Ullrich Heinemann3E851BA4BFE0B24A1430201
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-20kkmrkkblmbrbkE8E7F3355F6679C11013
Verified2018-03-06treborE8E7F3355F6679C11329707313
History
DateUserTypeResult
2023-03-17USAFSSNF-PM1
B1=240000, B2=119048790
2018-03-06treborC-PRP
M4669961/6167806838613065423 : E8E7F3355F6679C1
PRP: Verified
PRP without proof (not generated)
2017-09-20kkmrkkblmbrbkC-PRP
M4669961/6167806838613065423 : E8E7F3355F6679C1
PRP: Verified
PRP without proof (not generated)
2011-12-28GrunwalderGIMPF-ECM
Factor: 6167806838613065423
2009-08-23Carsten KossendeyNF-PM1
B1=25000, B2=331250