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
71972347
Composite: proven not-prime with PRP test
No factors below 276
TF target 274
P-1
B1 = 705000
B2 = 15686250
LL
StatusDateUserResidueShiftSoftware
Unverified2015-09-15Kyle Z SchmidtECC388C2E00D75__4924712Windows 64-bit,Prime95,v28.5,build 2
PRP
StatusProofDateUserResidueShiftTypeBase
Verified
Certified Good
Power=9
2024-11-09Luke DurantE03AE752BE48F2C5013
History
DateUserTypeResult
2024-11-09Mark FilipskiCERT
Proof certified good
2024-11-09Luke DurantC-PRPE03AE752BE48F2C5
Proof Certified Good

Proof Power: 9

2023-01-02tottenhoffNFno factor TF: 75-76
2015-09-15Kyle Z SchmidtC-LLECC388C2E00D75__
2015-08-18NickOfTimeNFno factor TF: 74-75
2014-07-09NickOfTimeNFno factor TF: 73-74
2014-07-07timc995NF-PM1B1=705000, B2=15686250, E=12
2014-07-01ChuckNFno factor TF: 72-73
2014-07-01ChuckNFno factor TF: 71-72
2012-11-20abcNFno factor TF: 70-71
2012-09-17tscNFno factor TF: 1-70
2010-05-15S36049NFno factor TF: 68-69
2010-05-11S36049NFno factor TF: 67-68
2010-05-10S36049NFno factor TF: 66-67
2010-05-08S36049NFno factor TF: 65-66
2010-05-06S36049NFno factor TF: 64-65
2008-10-07Wojciech FlorekNFno factor TF: 1-64
2002-05-11JossNFno factor TF: 1-57