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
47531929
Composite: proven not-prime with Lucas-Lehmer test
No factors below 275
TF target 272
P-1
B1 = 550000
B2 = 13750000
LL
StatusDateUserResidueShiftSoftware
Verified2010-12-05Kyle Z Schmidt28A9C36F8B6C59D520032733Windows,Prime95,v24 final,(aka Wc1)
Verified2019-03-16Li Binghui28A9C36F8B6C59D52788537Windows 64-bit,Prime95,v28.5,build 2
History
DateUserTypeResult
2024-06-25GregNFno factor TF: 69-70
2019-08-02Sid & AndyNFno factor TF: 74-75
2019-06-08Sid & AndyNFno factor TF: 73-74
2019-03-16Li BinghuiC-LL
28A9C36F8B6C59D5
2017-12-23RichD0NFno factor TF: 72-73
2015-11-29AirSquirrelsNFno factor TF: 71-72
2015-11-29AirSquirrelsNFno factor TF: 70-71
2015-08-27Judge HaleNFno factor TF: 69-70
2010-12-05Kyle Z SchmidtC-LL
28A9C36F8B6C59D5
2009-11-27Team_DeutschlandNF-PM1B1=550000, B2=13750000
2008-06-22-anonymous-NFno factor TF: 1-69
2008-06-02ComputerraRUNFno factor TF: 64-65
2008-06-02ComputerraRUNFno factor TF: 63-64
2008-03-11Team Prime RibNFno factor TF: 63-64
2008-03-11Team Prime RibNFno factor TF: 65-66
2008-03-11Team Prime RibNFno factor TF: 64-65