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
21519587Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 269
P-1
B1 = 1229000
B2 = 1450375290
ECM
DigitsB1Curves
255000025 / 280
Estimated T-Level: 20.4 ⓘ
LL
StatusDateUserResidueShift
Verified2004-09-16Grey SmithBD4BCE114CDDA5197331816
Verified2009-02-05lindsaiBD4BCE114CDDA51916763426
History
DateUserTypeResult
2023-12-27NumberwangNF-PM1
B1=1229000, B2=1450375290
2023-10-01NumberwangNF-PP1
Start=2/7, B1=1920000, B2=57600000
2021-05-29-Anonymous-NF
no factor from 2^72 to 2^73
2021-05-27-Anonymous-NF
no factor from 2^71 to 2^72
2021-05-27-Anonymous-NF
no factor from 2^70 to 2^71
2017-12-04YxinityNF
no factor from 2^69 to 2^70
2017-11-21VictordeHollanderNF
no factor from 2^68 to 2^69
2017-04-15ramgeisNF
no factor from 2^67 to 2^68
2015-05-09NRNF
no factor from 2^66 to 2^67
2009-02-05lindsaiC-LL
BD4BCE114CDDA519