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
54728647Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 274
TF target 273
P-1
B1 = 530000
B2 = 9275000
LL
StatusDateUserResidueShift
Verified2013-03-18BSGS20737E1D4646154512167828
Verified2020-11-10Sergey Nosov20737E1D4646154544740497
History
DateUserTypeResult
2020-11-10Sergey NosovC-LL
20737E1D46461545
2019-06-18Jon PaceNF
no factor from 2^73 to 2^74
2016-02-13-Anonymous-NF
no factor from 2^72 to 2^73
2013-03-18BSGSC-LL
20737E1D46461545
2012-04-15GrunwalderGIMPNF-PM1
B1=530000, B2=9275000
2012-04-05Craig MeyersNF
no factor from 2^71 to 2^72
2011-08-14TheJudgerNF
no factor from 2^70 to 2^71
2011-05-27-Anonymous-NF
no factor from 2^69 to 2^70
2011-04-02ANONYMOUSNF
no factor from 2^68 to 2^69
2009-09-10Geoff WingNF
no factor from 2^67 to 2^68
2009-03-16-Anonymous-NF
no factor from 2^66 to 2^67
2009-03-15-Anonymous-NF
no factor from 2^65 to 2^66
2009-03-04-Anonymous-NF
no factor from 2^64 to 2^65
2009-03-03-Anonymous-NF
no factor from 2^63 to 2^64
2008-07-29-Anonymous-NF
no factor to 2^63