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
78928589Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 276
TF target 275
P-1
B1 = 680000
B2 = 12580000
LL
StatusDateUserResidueShift
Verified2017-02-06curtiscD1E98947D0C4C1A015646636
Verified2025-09-15Dr. Markus HauserD1E98947D0C4C1A02447226
History
DateUserTypeResult
2025-09-15Dr. Markus HauserC-LL
D1E98947D0C4C1A0
2025-07-10Sid & AndyNF
no factor from 2^75 to 2^76
2017-02-06curtiscC-LL
D1E98947D0C4C1A0
2016-07-29Smok_bmv NF-PM1
B1=680000, B2=12580000
2016-07-10Sid & AndyNF
no factor from 2^74 to 2^75
2016-07-10Sid & AndyNF
no factor from 2^73 to 2^74
2016-07-04RichD0NF
no factor from 2^72 to 2^73
2016-02-12RichD0NF
no factor from 2^71 to 2^72
2013-02-11Clown_RoyalNF
no factor from 2^70 to 2^71
2012-04-06-Anonymous-NF
no factor from 2^69 to 2^70
2011-03-31Per JessenNF
no factor from 2^68 to 2^69
2011-03-25Per JessenNF
no factor from 2^67 to 2^68
2010-11-23Pi_RhoNF
no factor from 2^66 to 2^67
2010-11-15Pi_RhoNF
no factor from 2^65 to 2^66
2010-11-11TeraTismNF
no factor from 2^64 to 2^65
2008-06-16-Anonymous-NF
no factor to 2^64