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
43716821Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 272
P-1
B1 = 530000
B2 = 15237500
LL
StatusDateUserResidueShift
Bad2008-11-26Phantomas1B4B57A6328A4C883905503
Verified2016-05-31kkmrkkblmbrbkF7980937F3C7C3BD37937840
Verified2016-09-16NipalF7980937F3C7C3BD12596209
History
DateUserTypeResult
2018-08-06-Anonymous-NF
no factor from 2^72 to 2^73
2016-09-16NipalC-LL
F7980937F3C7C3BD
2016-05-31kkmrkkblmbrbkC-LL
F7980937F3C7C3BD
2015-09-27AirSquirrelsNF
no factor from 2^71 to 2^72
2015-09-09VictordeHollanderNF
no factor from 2^70 to 2^71
2015-03-11LaurVNF
no factor from 2^69 to 2^70
2014-01-27LaurVNF
no factor from 2^68 to 2^69
2008-11-26PhantomasC-LL
1B4B57A6328A4C88
2008-10-29PhantomasNF-PM1
B1=530000, B2=15237500