Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
2783909Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 270
TF target 263
TF below 2^80 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 52894272
B2 = 1284463520340
ECM
DigitsB1Curves
2550000280 / 280
3025000074 / 640
Estimated T-Level: 25.6 ⓘ
LL
StatusDateUserResidueShift
VerifiedNino PorcinoC3835556D7D5CA380
Verified1999-07-26Robert PerkinsC3835556D7D5CA382179529
Verified2018-08-26kkmrkkblmbrbkC3835556D7D5CA382057044
History
DateUserTypeResult
2025-01-08yuriy_5-1NF-PM1
B1=52894272, B2=1284463520340
2023-10-20TJAOINF
no factor from 2^69 to 2^70
2023-02-23Architects CubedNF-PM1
B1=5000000, B2=8681331750
2021-07-08TJAOINF
no factor from 2^68 to 2^69
2019-11-15BigBrotherNF-PM1
B1=3000000, B2=90000000, E=12
2019-02-25chuenkitNF
no factor from 2^67 to 2^68
2018-08-26kkmrkkblmbrbkC-LL
C3835556D7D5CA38
2017-10-16Gordon SpenceNF
no factor from 2^66 to 2^67
2017-07-20JossNF-PM1
B1=400000, B2=4000000, E=6
2016-05-02JossNF-PM1
B1=200000, B2=3600000, E=6
2016-02-23Mark RoseNF
no factor from 2^1 to 2^60
2016-02-08ramgeisNF
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
2014-10-28JossNF-PM1
B1=123055
2013-01-10dbaughNF
no factor from 2^62 to 2^63
2012-04-02Grant McCrackenNF
no factor from 2^61 to 2^62
2010-11-25markrNF-PM1
B1=100000, B2=2075000, E=6
2010-11-11JossNF-PM1
B1=15000
2009-01-28Sturle SundeNF
no factor from 2^60 to 2^61