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
21055579Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 274
TF target 269
P-1
B1 = 1785714
B2 = 1777336470
LL
StatusDateUserResidueShift
Verified2003-12-23Brandon ArrietaB7DA2C567798081A18126028
Verified2009-02-28shaneamyB7DA2C567798081A4177416
History
DateUserTypeResult
2024-12-12timc995NF-PM1
B1=1785714, B2=1777336470
2021-12-23-Anonymous-NF
no factor from 2^73 to 2^74
2021-11-19-Anonymous-NF
no factor from 2^72 to 2^73
2021-10-01-Anonymous-NF
no factor from 2^71 to 2^72
2021-09-15SRBaseNF
no factor from 2^70 to 2^71
2017-09-15ramgeisNF
no factor from 2^69 to 2^70
2017-09-15ramgeisNF
no factor from 2^68 to 2^69
2017-05-04ramgeisNF
no factor from 2^67 to 2^68
2015-04-09NRNF
no factor from 2^66 to 2^67
2009-02-28shaneamyC-LL
B7DA2C567798081A