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

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MnStatusDetails
2844119Factored
FactorDigitsBitsDate
20632171320989102602812270.82019-02-12 10:49:27
ECM
DigitsB1Curves
255000030 / 280
Estimated T-Level: 20.5 ⓘ
TF below 2^63 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Mark Rawlings4856FB87953C921E0
Verified (Factored)1999-05-09Ashley Hatch4856FB87953C921E1353951
Verified (Factored)2018-09-14kkmrkkblmbrbk4856FB87953C921E1069610
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2019-02-15Luigi Morelli4419746BAB28457B1188196353
Verified2019-02-17arnaud4419746BAB28457B140340053
History
DateUserTypeResult
2023-04-17Kevin_9611NF-PM1
B1=470000, B2=574364700
2019-02-17arnaudC-PRP
M2844119/2063217132098910260281 : 4419746BAB28457B
PRP: Verified
PRP without proof (not generated)
2019-02-15Luigi MorelliC-PRP
M2844119/2063217132098910260281 : 4419746BAB28457B
PRP: Verified
PRP without proof (not generated)
2019-02-12Chang Chia-TcheF-ECM
Factor: 2063217132098910260281 / (ECM curve 3, B1=50000, B2=5000000)
2019-01-05chuenkitNF
no factor from 2^67 to 2^68
2018-09-14kkmrkkblmbrbkC-LL
4856FB87953C921E
2017-11-04Gordon SpenceNF
no factor from 2^66 to 2^67
2017-06-28JossNF-PM1
B1=390000, B2=3900000, E=6
2016-02-23Mark RoseNF
no factor from 2^1 to 2^60
2016-02-14ramgeisNF
no factor from 2^65 to 2^66
2015-04-21VictordeHollanderNF
no factor from 2^64 to 2^65
2015-04-21VictordeHollanderNF
no factor from 2^63 to 2^64
2013-01-10dbaughNF
no factor from 2^62 to 2^63
2012-02-08Grant McCrackenNF
no factor from 2^61 to 2^62
2012-01-13Squeeky_SquirrelNF-PM1
B1=195000, B2=4875000, E=6
2011-01-24JossNF-PM1
B1=50000
2009-02-13Sturle SundeNF
no factor from 2^60 to 2^61
2008-10-31Jayson KingNF-PM1
B1=35000, B2=560000