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
20516689Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 269
P-1
B1 = 250000
B2 = 6562500
LL
StatusDateUserResidueShift
Verified2003-10-23Troy McFee053DE7311432758F20445126
Verified2008-03-12TheJudger053DE7311432758F17900085
History
DateUserTypeResult
2021-11-13-Anonymous-NF
no factor from 2^72 to 2^73
2021-10-01-Anonymous-NF
no factor from 2^71 to 2^72
2021-09-14SRBaseNF
no factor from 2^70 to 2^71
2018-05-25ramgeisNF
no factor from 2^69 to 2^70
2017-10-26VictordeHollanderNF
no factor from 2^68 to 2^69
2017-04-15ramgeisNF
no factor from 2^67 to 2^68
2015-02-28NRNF
no factor from 2^66 to 2^67