Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

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MnStatusDetails
19705927Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 269
P-1
B1 = 1100000
B2 = 468055560
LL
StatusDateUserResidueShift
Verified2004-02-14Javier9D1645D37B72CF2218538206
Verified2007-12-03Ivan Boldyrev9D1645D37B72CF222238616
History
DateUserTypeResult
2024-09-10Sid & AndyNF-PM1
B1=1100000, B2=468055560
2021-11-05-Anonymous-NF
no factor from 2^72 to 2^73
2021-10-02-Anonymous-NF
no factor from 2^71 to 2^72
2021-09-13SRBaseNF
no factor from 2^70 to 2^71
2021-01-18James HeinrichNF-PM1
B1=446000, B2=30286000
2019-11-25lycornNF
no factor from 2^69 to 2^70
2017-11-26ramgeisNF
no factor from 2^68 to 2^69
2013-11-04NesowaNF
no factor from 2^67 to 2^68
2013-11-04NesowaNF
no factor from 2^66 to 2^67