Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
83783519Tested as composite (unverified): unconfirmed Lucas-Lehmer test says not-prime
TF
No factors below 276
TF target 275
P-1
B1 = 690000
B2 = 13455000
LL
StatusDateUserResidueShift
Unverified2019-03-24Andrew G7F626A5CBB6CDE__19302012
History
DateUserTypeResult
2019-03-24Andrew GC-LL
7F626A5CBB6CDE__
2019-02-04ATHNF
no factor from 2^63 to 2^64
2019-02-04ATHNF
no factor from 2^1 to 2^63
2017-01-13Architects CubedNF-PM1
B1=690000, B2=13455000, E=6
2017-01-11dh1NF
no factor from 2^75 to 2^76
2017-01-11dh1NF
no factor from 2^74 to 2^75
2017-01-11dh1NF
no factor from 2^73 to 2^74
2017-01-11dh1NF
no factor from 2^72 to 2^73
2017-01-11dh1NF
no factor from 2^71 to 2^72
2013-07-24willmoreNF
no factor from 2^70 to 2^71
2013-06-14PascalBieriNF
no factor from 2^69 to 2^70
2013-06-13PascalBieriNF
no factor from 2^68 to 2^69
2013-02-15butterfloNF
no factor from 2^67 to 2^68
2013-02-15Juergen KampmeierNF
no factor from 2^66 to 2^67
2012-08-13Carsten KossendeyNF
no factor from 2^65 to 2^66
2010-12-09Architects CubedNF
no factor from 2^64 to 2^65