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
72918689Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 275
TF target 274
P-1
B1 = 605000
B2 = 11948750
LL
StatusDateUserResidueShift
Verified2015-11-21curtiscC77AAB44971D031440897213
Verified2023-09-18MirraC77AAB44971D031469195558
History
DateUserTypeResult
2023-09-18MirraC-LL
C77AAB44971D0314
2015-11-21curtiscC-LL
C77AAB44971D0314
2015-09-12NesowaNF-PM1
B1=605000, B2=11948750, E=12
2015-09-04NickOfTimeNF
no factor from 2^74 to 2^75
2015-09-01dragonbud20NF
no factor from 2^73 to 2^74
2015-09-01dragonbud20NF
no factor from 2^72 to 2^73
2015-03-26el groccoNF
no factor from 2^71 to 2^72
2013-07-03PascalBieriNF
no factor from 2^70 to 2^71
2012-10-16NBNF
no factor from 2^69 to 2^70
2010-06-13S04803NF
no factor from 2^68 to 2^69
2010-06-12-Anonymous-NF
no factor from 2^67 to 2^68
2010-06-01alan145NF
no factor from 2^66 to 2^67
2010-05-31jomateixNF
no factor from 2^65 to 2^66
2010-05-25Robert M.NF
no factor from 2^64 to 2^65
2008-09-19Wojciech FlorekNF
no factor to 2^64