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
61889881TF
No factors below 274
TF target 274
P-1
B1 = 585000
B2 = 11700000
LL
StatusDateUserResidueShift
Verified2013-07-26Andrzej ArminskiE12828F9B08364CB13940147
Verified2022-06-20Andrew_andE12828F9B08364CB23258004
History
DateUserTypeResult
2022-06-20Andrew_andC-LL
E12828F9B08364CB
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2013-07-26Andrzej ArminskiC-LL
E12828F9B08364CB
2013-06-28RichD0NF
no factor from 2^73 to 2^74
2013-05-15BdotNF-PM1
B1=585000, B2=11700000, E=6
2013-02-21ktonyNF
no factor from 2^72 to 2^73
2013-02-12ChuckNF
no factor from 2^71 to 2^72
2013-02-09XyzzyNF
no factor from 2^70 to 2^71
2011-11-25eon_blue_apocalypseNF
no factor from 2^69 to 2^70
2009-08-11Chris VernieriNF
no factor from 2^68 to 2^69
2009-08-07S00030NF
no factor from 2^67 to 2^68
2009-08-04S00030NF
no factor from 2^66 to 2^67
2009-08-02-Anonymous-NF
no factor from 2^65 to 2^66
2009-07-29SMoffatNF
no factor from 2^64 to 2^65
2009-06-13markrNF
no factor from 2^63 to 2^64