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

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MnStatusDetails
2362649Factored
FactorDigitsBitsDate
3968558400355773700163549772788.42015-08-29 08:40:17
ECM
DigitsB1Curves
255000068 / 280
Estimated T-Level: 21.2
TF below 2^65 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Rick J Channing5542B44B8B90C9590
Verified (Factored)1999-03-15Cameron Mayor5542B44B8B90C959166714
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-30alpertronAAF21698374580031013
Verified2017-11-01Oliver KruseAAF21698374580031114533913
P-1 factors
DateFactorB1B2
2015-08-293968558400355773700163549773000000100000000
History
DateUserTypeResult
2022-03-09LordJuliusNF
no factor from 2^1 to 2^60
2018-04-27alpertronNF-PM1
B1=2000000, B2=60000000, E=12
2017-11-01Oliver KruseC-PRP
M2362649/396855840035577370016354977 : AAF2169837458003
PRP: Verified
PRP without proof (not generated)
2017-09-30alpertronC-PRP
M2362649/396855840035577370016354977 : AAF2169837458003
PRP: Verified
PRP without proof (not generated)
2015-08-29mikrF-PM1
Factor: 396855840035577370016354977 / (P-1, B1=3000000, B2=100000000, E=12)
2015-03-09VictordeHollanderNF
no factor from 2^64 to 2^65
2015-03-09VictordeHollanderNF
no factor from 2^63 to 2^64
2014-10-22JossNF-PM1
B1=144332
2014-08-07JossNF-PM1
B1=117166
2013-01-23dbaughNF
no factor from 2^62 to 2^63
2012-05-30Sebastian HornbostelNF
no factor from 2^61 to 2^62
2011-01-23Oscar ÖstlinNF-PM1
B1=90000, B2=1822500, E=6
2010-12-23Oscar ÖstlinNF-PM1
B1=75011
2010-11-03JossNF-PM1
B1=20000
2009-01-14Sturle SundeNF
no factor from 2^60 to 2^61