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
15004537Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 269
P-1
B1 = 937000
B2 = 917468370
ECM
DigitsB1Curves
255000014 / 280
Estimated T-Level: 20.3 ⓘ
LL
StatusDateUserResidueShift
Verified2003-02-09Michael A. Burns1723F9E1EF4957E05449898
Verified2005-09-22Ars Technica Team Prime Rib1723F9E1EF4957E01740219
History
DateUserTypeResult
2023-11-29Stef42NF-PM1
B1=937000, B2=917468370
2023-06-10Naegi MakotoNF
no factor from 2^72 to 2^73
2022-02-03ATHNF-PP1
Start=2/7, B1=1000000, B2=29000000
2021-10-09-Anonymous-NF
no factor from 2^71 to 2^72
2021-09-02SRBaseNF
no factor from 2^70 to 2^71
2020-05-31YxinityNF
no factor from 2^69 to 2^70
2017-12-22riccardo ubertiNF-PM1
B1=430000, B2=9000000, E=12
2017-09-30ramgeisNF
no factor from 2^68 to 2^69
2015-10-07mikrNF
no factor from 2^67 to 2^68
2014-06-11NesowaNF
no factor from 2^66 to 2^67
2014-06-11NesowaNF
no factor from 2^65 to 2^66