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

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Exponent Range:










MnStatusDetails
425387Factored
FactorDigitsBitsDate
111425460986257150582900595041582334109.82019-05-07 20:12:14
ECM
DigitsB1Curves
2550000280 / 280
30250000441 / 640
Estimated T-Level: 28.4 ⓘ
TF below 2^89 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)David Slowinski461B0
Verified (Factored)David BrlejF219F7ABB8CEC61B0
Verified (Factored)Lance OpticanF219F7ABB8CEC61B0
Verified (Factored)Eivind TrielF219F7ABB8CEC61B285891
Verified (Factored)2016-06-01MadPooF219F7ABB8CEC61B135028
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2019-05-08ANONYMOUS360B6AE8485CB5C7125817553
Verified2019-05-10Chang Chia-Tche360B6AE8485CB5C7138335053
History
DateUserTypeResult
2019-05-10Chang Chia-TcheC-PRP
M425387/1114254609862571505829005950415823 : 360B6AE8485CB5C7
PRP: Verified
PRP without proof (small exponent)
2019-05-08ANONYMOUSC-PRP
M425387/1114254609862571505829005950415823 : 360B6AE8485CB5C7
PRP: Verified
PRP without proof (small exponent)
2019-05-07alexF-ECM
Factor: 1114254609862571505829005950415823 / (ECM curve 317, B1=250000, B2=25000000, Sigma=5922893027069220)
2018-12-09Gordon SpenceNF
no factor from 2^65 to 2^66
2018-01-07BloodERazorNF
no factor from 2^64 to 2^65
2016-06-01MadPooC-LL
F219F7ABB8CEC61B
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2015-11-15Gordon SpenceNF
no factor from 2^63 to 2^64
2015-11-15Gordon SpenceNF
no factor from 2^62 to 2^63
2015-07-15NRNF
no factor from 2^61 to 2^62
2012-08-27markrNF-PM1
B1=10000000, B2=400000000, E=12
2012-04-21Sid & AndyNF
no factor from 2^60 to 2^61
2012-03-10JossNF-PM1
B1=1257935
2011-08-06JossNF-PM1
B1=1006348
2010-07-30Rob_DeeNF-PM1
B1=1000000, B2=2000000, E=6
2010-07-29Rob_DeeNF-PM1
B1=500000, B2=1000000