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

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MnStatusDetails
1655557Factored
FactorDigitsBitsDate
5120764031739983641469032478.82012-02-11 09:12:46
ECM
DigitsB1Curves
2550000280 / 280
30250000134 / 640
Estimated T-Level: 26.0
TF below 2^82 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Joshua Cope89DEE62B0EE914F30
Verified (Factored)Dwayne Towell89DEE62B0EE914F30
Verified (Factored)1999-02-14Ethan Hansen89DEE62B0EE914F3383292
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-02Oliver Kruse022F47157F8E9FF71013
Verified2017-11-02ATH022F47157F8E9FF7159037313
History
DateUserTypeResult
2017-11-02ATHC-PRP
M1655557/512076403173998364146903 : 022F47157F8E9FF7
PRP: Verified
PRP without proof (not generated)
2017-10-02Oliver KruseC-PRP
M1655557/512076403173998364146903 : 022F47157F8E9FF7
PRP: Verified
PRP without proof (not generated)
2016-03-17alpertronNF-PM1
B1=500000, B2=15000000, E=12
2012-02-11AxonF-ECM
Factor: 512076403173998364146903
2012-02-11AxonNF-PM1
B1=1000000, B2=40000000, E=12
2012-02-11AxonNF-PM1
B1=1000000, B2=32000000, E=12
2012-02-11AxonNF-PM1
B1=1000000, B2=24000000, E=12
2012-02-11AxonNF-PM1
B1=1000000, B2=16000000, E=12
2012-02-11AxonNF-PM1
B1=1000000, B2=8000000, E=12
2012-02-11AxonNF-PM1
B1=1000000
2012-02-11AxonNF-PM1
B1=900000
2012-02-11AxonNF-PM1
B1=800000
2012-02-11AxonNF-PM1
B1=700000
2012-02-11AxonNF-PM1
B1=600000
2012-02-11AxonNF-PM1
B1=500000
2012-02-11AxonNF-PM1
B1=400000
2012-02-11AxonNF-PM1
B1=300000
2012-02-11AxonNF-PM1
B1=200000
2012-02-11AxonNF-PM1
B1=100000
2010-08-13GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-04-26Architects CubedNF
no factor from 2^60 to 2^61