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

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MnStatusDetails
1752827Factored
FactorDigitsBitsDate
2748126599056298761432167.92015-12-28 21:20:29
ECM
DigitsB1Curves
2550000280 / 280
30250000108 / 640
Estimated T-Level: 25.8
TF below 2^81 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Ronnie VanDommelen9A8AE775341BAD470
Verified (Factored)1999-05-09Kevin Harlan9A8AE775341BAD47989278
Verified (Factored)2015-07-06MadPoo9A8AE775341BAD47707501
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-30alpertronBFD83D4F3FEAE4181013
Verified2017-10-19Oliver KruseBFD83D4F3FEAE4181156705913
History
DateUserTypeResult
2017-10-19Oliver KruseC-PRP
M1752827/274812659905629876143 : BFD83D4F3FEAE418
PRP: Verified
PRP without proof (not generated)
2017-09-30alpertronC-PRP
M1752827/274812659905629876143 : BFD83D4F3FEAE418
PRP: Verified
PRP without proof (not generated)
2016-02-23Mark RoseNF
no factor from 2^61 to 2^62
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-12-28Chang Chia-TcheF-ECM
Factor: 274812659905629876143 / (ECM curve 2, B1=50000, B2=5000000)
2015-09-05ramgeisNF
no factor from 2^65 to 2^66
2015-07-06MadPooC-LL
9A8AE775341BAD47
2015-06-30mikrNF-PM1
B1=3642200, B2=123456789, E=12
2015-05-13snme2pm1NF
no factor from 2^64 to 2^65
2015-05-13snme2pm1NF
no factor from 2^63 to 2^64
2015-04-24Squeeky_SquirrelNF-PM1
B1=130000, B2=3640000, E=6
2014-09-16-Anonymous-NF-PM1
B1=173236
2014-05-06JossNF-PM1
B1=136618
2014-04-08JossNF-PM1
B1=100000
2011-02-08Carsten KossendeyNF-PM1
B1=95000, B2=1567500, E=6
2010-12-13GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-04-20Architects CubedNF
no factor from 2^60 to 2^61