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
2411219Factored
FactorDigitsBitsDate
658127227920723182248215832685.82014-03-12 05:30:20
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)Murray Forster9A947151EE84C8500
Verified (Factored)Stephen Wood9A947151EE84C8500
Verified (Factored)1999-07-12Bill Roberts9A947151EE84C8501743515
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-13Oliver Kruse30F034198542B27B1103590053
Verified2017-11-26kkmrkkblmbrbk30F034198542B27B1137728353
P-1 factors
DateFactorB1B2
2014-03-1265812722792072318224821583310282243439508
History
DateUserTypeResult
2022-03-09LordJuliusNF
no factor from 2^1 to 2^60
2018-09-28alpertronNF-PM1
B1=2000000, B2=60000000, E=12
2017-11-26kkmrkkblmbrbkC-PRP
M2411219/65812722792072318224821583 : 30F034198542B27B
PRP: Verified
PRP without proof (not generated)
2017-10-13Oliver KruseC-PRP
M2411219/65812722792072318224821583 : 30F034198542B27B
PRP: Verified
PRP without proof (not generated)
2014-03-12mikrF-PM1
Factor: 65812722792072318224821583
2013-12-04Jerry HallettNF
no factor from 2^62 to 2^63
2012-06-03Sebastian HornbostelNF
no factor from 2^61 to 2^62
2010-12-20markrNF-PM1
B1=95000, B2=1923750, E=6
2010-11-16JossNF-PM1
B1=20000
2010-11-09JossNF-PM1
B1=15000
2009-01-14Sturle SundeNF
no factor from 2^60 to 2^61