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
48414473Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 276
TF target 272
P-1
B1 = 1500000
B2 = 45000000
LL
StatusDateUserResidueShift
Verified2011-01-30Michael J. MendezE52255B51A639ED127230842
Verified2019-09-09T. LoschE52255B51A639ED124264487
History
DateUserTypeResult
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
2021-05-27Sid & AndyNF-PM1
B1=1500000, B2=45000000
2019-09-09T. LoschC-LL
E52255B51A639ED1
2019-07-18Sid & AndyNF
no factor from 2^73 to 2^74
2018-02-17LingUaanNF
no factor from 2^72 to 2^73
2015-12-10AirSquirrelsNF
no factor from 2^71 to 2^72
2015-12-10AirSquirrelsNF
no factor from 2^70 to 2^71
2015-08-30Gordon SpenceNF
no factor from 2^69 to 2^70
2011-01-30Michael J. MendezC-LL
E52255B51A639ED1
2011-01-21Michael J. MendezNF-PM1
B1=565000, B2=14972500, E=6