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:





MnDetails
49812869
Composite: proven not-prime with Lucas-Lehmer test
No factors below 274
TF target 273
P-1
B1 = 1000000
B2 = 20000000
LL
StatusDateUserResidueShiftSoftware
Bad2010-09-04-anonymous-10A02B946A804B1D46127842Windows,Prime95,v25.9,build 3
Verified2016-02-08cuBerBruce8A076EA2F42C29B010611806Windows 64-bit,Prime95,v28.7,build 1
Verified2016-09-12endless_mike8A076EA2F42C29B035220948Linux 64-bit,Prime95,v28.9,build 2
History
DateUserTypeResult
2019-09-17Sid & AndyNF-PM1B1=1000000, B2=20000000, E=12
2017-12-03Oliver KruseNFno factor TF: 72-74
2017-11-24monstNFno factor TF: 72-73
2016-09-12endless_mikeC-LL8A076EA2F42C29B0
2016-02-08cuBerBruceC-LL8A076EA2F42C29B0
2015-12-06-anonymous-NFno factor TF: 71-72
2015-06-14LaurVNFno factor TF: 70-71
2015-06-12LaurVNFno factor TF: 69-70
2010-09-04-anonymous-C-LL10A02B946A804B1D
2010-06-26-anonymous-NF-PM1B1=780000
2008-09-06ptcrNFno factor TF: 1-69