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

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Exponent Range:










MnStatusDetails
2957659Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 270
TF target 264
TF below 2^81 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 10000000
B2 = 19242315246
ECM
DigitsB1Curves
2550000280 / 280
30250000101 / 640
Estimated T-Level: 25.8 ⓘ
LL
StatusDateUserResidueShift
VerifiedKenneth ForwardA386C8186608D7960
Verified1999-05-16TimoA386C8186608D7962815094
Verified2018-10-13kkmrkkblmbrbkA386C8186608D796981759
History
DateUserTypeResult
2023-04-06mikrNF-PM1
B1=10000000, B2=19242315246
2023-03-24TJAOINF
no factor from 2^69 to 2^70
2022-11-18JossNF-PM1
B1=1000000, B2=1283782500
2021-11-22Aaron HavilandNF-PM1
B1=1200000, B2=36000000, e=12
2021-05-12TJAOINF
no factor from 2^68 to 2^69
2018-12-24chuenkitNF
no factor from 2^67 to 2^68
2018-10-13kkmrkkblmbrbkC-LL
A386C8186608D796
2017-11-28Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-26ramgeisNF
no factor from 2^65 to 2^66
2015-05-02VictordeHollanderNF-PM1
B1=1000000, B2=20000000, E=12
2015-04-29VictordeHollanderNF
no factor from 2^64 to 2^65
2015-04-29VictordeHollanderNF
no factor from 2^63 to 2^64
2013-01-07dbaughNF
no factor from 2^62 to 2^63
2011-12-11markrNF
no factor from 2^61 to 2^62
2010-11-01markrNF-PM1
B1=95000, B2=1995000, E=6
2009-02-14Sturle SundeNF
no factor from 2^60 to 2^61