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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MnStatusDetails
73161601Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 276
TF target 274
P-1
B1 = 630000
B2 = 12442500
LL
StatusDateUserResidueShift
Verified2015-09-01curtisc6216AA7B72DEC11B40387183
Bad2024-03-14belezbar450E2CEDEBB4A01F3538774
Verified2024-03-19MadPoo6216AA7B72DEC11B42267963
History
DateUserTypeResult
2024-03-19MadPooC-LL
6216AA7B72DEC11B
2024-03-14belezbarC-LL
450E2CEDEBB4A01F
2020-10-09-Anonymous-NF
no factor from 2^75 to 2^76
2015-09-01curtiscC-LL
6216AA7B72DEC11B
2015-05-04James HeinrichNF-PM1
B1=630000, B2=12442500, E=6
2015-04-24NickOfTimeNF
no factor from 2^74 to 2^75
2015-04-24NickOfTimeNF
no factor from 2^73 to 2^74
2015-04-20BdotNF
no factor from 2^72 to 2^73
2015-03-24srow7NF
no factor from 2^71 to 2^72
2013-04-23g0bNF
no factor from 2^70 to 2^71
2012-10-05ptcrNF
no factor from 2^69 to 2^70
2010-06-12{WC}PistolPeteNF
no factor from 2^68 to 2^69
2010-06-11ASTERIASNF
no factor from 2^67 to 2^68
2010-06-05PVasilevNF
no factor from 2^66 to 2^67
2010-05-31oodairaNF
no factor from 2^65 to 2^66
2010-05-31JMGarciaNF
no factor from 2^64 to 2^65
2008-06-28George WoltmanNF
no factor to 2^64