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
2795887Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 270
TF target 263
TF below 2^74 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 53121854
B2 = 1284463520340
ECM
DigitsB1Curves
2550000204 / 280
Estimated T-Level: 23.6 ⓘ
LL
StatusDateUserResidueShift
Verified1998-05-16Alexander Staff63F262FF1A9515BF0
Verified1999-06-06Randy Cushman63F262FF1A9515BF1328963
Verified2018-08-30kkmrkkblmbrbk63F262FF1A9515BF1193687
History
DateUserTypeResult
2025-01-08yuriy_5-1NF-PM1
B1=53121854, B2=1284463520340
2023-09-22TJAOINF
no factor from 2^69 to 2^70
2023-02-28Architects CubedNF-PM1
B1=5000000, B2=8681331750
2021-06-21TJAOINF
no factor from 2^68 to 2^69
2019-12-18BigBrotherNF-PM1
B1=3000000, B2=90000000, E=12
2019-02-27chuenkitNF
no factor from 2^67 to 2^68
2018-08-30kkmrkkblmbrbkC-LL
63F262FF1A9515BF
2017-10-19Gordon SpenceNF
no factor from 2^66 to 2^67
2017-07-30JossNF-PM1
B1=400000, B2=4000000, E=6
2016-05-08JossNF-PM1
B1=200000, B2=3600000, E=6
2016-02-23Mark RoseNF
no factor from 2^59 to 2^60
2016-02-09ramgeisNF
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
2014-11-06JossNF-PM1
B1=122957
2013-01-10dbaughNF
no factor from 2^62 to 2^63
2012-03-01markrNF
no factor from 2^61 to 2^62
2010-11-22markrNF-PM1
B1=100000, B2=2075000, E=6
2010-11-14JossNF-PM1
B1=15000
2009-02-14Sturle SundeNF
no factor from 2^60 to 2^61