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
48416549Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 277
TF target 272
P-1
B1 = 1500000
B2 = 45000000
LL
StatusDateUserResidueShift
Verified2010-03-17rick50095CF6714B9D3A16421013
Verified2019-09-06Mark Rose50095CF6714B9D3A1182835
History
DateUserTypeResult
2021-06-22-Anonymous-NF
no factor from 2^76 to 2^77
2021-06-15-Anonymous-NF
no factor from 2^75 to 2^76
2021-06-15-Anonymous-NF
no factor from 2^74 to 2^75
2021-05-21Sid & AndyNF-PM1
B1=1500000, B2=45000000
2019-09-06Mark RoseC-LL
50095CF6714B9D3A
2019-07-18Sid & AndyNF
no factor from 2^73 to 2^74
2018-02-14Andrew BNF
no factor from 2^72 to 2^73
2015-12-11AirSquirrelsNF
no factor from 2^71 to 2^72
2015-12-11AirSquirrelsNF
no factor from 2^70 to 2^71
2015-08-31Sid & AndyNF
no factor from 2^69 to 2^70
2010-03-17rickC-LL
50095CF6714B9D3A
2010-01-27rickNF-PM1
B1=560000, B2=13580000