Marin Mersenne 2^P-1
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MnStatusDetails
2397449Factored
FactorDigitsBitsDate
971508745996472730242872376.42018-06-15 05:03:52
ECM
DigitsB1Curves
255000034 / 280
Estimated T-Level: 20.6 ⓘ
TF below 2^63 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Doug Fortune386B241F802DFB630
Verified (Factored)1999-06-26Dieter Schmitt386B241F802DFB6317862
Verified (Factored)2018-05-17kkmrkkblmbrbk386B241F802DFB63431016
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2018-06-15ATHB7660B909BC889BC1182633153
Verified2018-06-17Oliver KruseB7660B909BC889BC144759453
History
DateUserTypeResult
2018-06-17Oliver KruseC-PRP
M2397449/97150874599647273024287 : B7660B909BC889BC
PRP: Verified
PRP without proof (not generated)
2018-06-15ATHC-PRP
M2397449/97150874599647273024287 : B7660B909BC889BC
PRP: Verified
PRP without proof (not generated)
2018-06-15bamF-ECM
Factor: 97150874599647273024287 / (ECM curve 3, B1=50000, B2=5000000)
2018-05-17kkmrkkblmbrbkC-LL
386B241F802DFB63
2017-06-27Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^59 to 2^60
2015-12-11mikrNF-PM1
B1=3000000, B2=100000000, E=12
2015-11-05ramgeisNF
no factor from 2^65 to 2^66
2015-03-12VictordeHollanderNF
no factor from 2^64 to 2^65
2015-03-12VictordeHollanderNF
no factor from 2^63 to 2^64
2014-11-06JossNF-PM1
B1=143544
2014-08-21JossNF-PM1
B1=116772
2013-12-04Jerry HallettNF
no factor from 2^62 to 2^63
2012-06-02Sebastian HornbostelNF
no factor from 2^61 to 2^62
2010-12-23markrNF-PM1
B1=90000, B2=1845000, E=6
2010-11-15JossNF-PM1
B1=20000
2010-11-08JossNF-PM1
B1=15000
2009-01-15Sturle SundeNF
no factor from 2^60 to 2^61