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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Exponent Range:










MnStatusDetails
4890383Factored
FactorDigitsBitsDate
5192103647168469444232168.82018-06-09 17:36:52
ECM
DigitsB1Curves
25500009 / 280
Estimated T-Level: 20.2
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)1998-07-29Ken Burbank0CB71FD1148315630
Verified (Factored)2000-04-05Bob J. Taylor0CB71FD1148315631317143
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2018-06-10Luigi MorelliA1C7FA6FA22B1E591186219953
Verified2018-06-12Oliver KruseA1C7FA6FA22B1E591308658053
History
DateUserTypeResult
2018-06-12Oliver KruseC-PRP
M4890383/519210364716846944423 : A1C7FA6FA22B1E59
PRP: Verified
PRP without proof (not generated)
2018-06-10Luigi MorelliC-PRP
M4890383/519210364716846944423 : A1C7FA6FA22B1E59
PRP: Verified
PRP without proof (not generated)
2018-06-09YxinityF
Factor: 519210364716846944423 / TF: 68-69
2018-05-08ramgeisNF
no factor from 2^67 to 2^68
2017-10-31YxinityNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-07-22snme2pm1NF
no factor from 2^65 to 2^66
2015-01-07VictordeHollanderNF
no factor from 2^64 to 2^65
2015-01-07VictordeHollanderNF
no factor from 2^63 to 2^64
2014-01-12David CampeauNF-PM1
B1=410000, B2=11070000, E=12
2011-10-09GrunwalderGIMPNF
no factor from 2^1 to 2^63
2010-04-16markrNF
no factor from 2^61 to 2^62
2009-09-03Carsten KossendeyNF-PM1
B1=30000, B2=435000