Marin Mersenne 2^P-1
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Finding World Record Primes Since 1996

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MnDetails
997
Composite, with 1 known prime factor. Cofactor is PRP (Probable-Prime).
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
16756081651408481948873776797626315040509519155473290260757186.8old
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors
ShiftTypeBase
Factored
No proof (small exponent)
2024-09-06George WoltmanPRP_PRP_PRP_PRP_1013
History
DateUserTypeResult
2024-09-06George WoltmanP-PRPM997/167560816514084819488737767976263150405095191554732902607
PRP Cofactor
2002-04-14-anonymous-NF-PM1B1=4290000000, B2=4290000000
2002-03-31-anonymous-NF-PM1B1=3221225472, B2=4290000000
2001-06-23-anonymous-NFno factor TF: 1-57
2001-05-13-anonymous-NF-PM1B1=3000000000, B2=4290000000
2001-02-11-anonymous-NF-PM1B1=10000000, B2=1000000000
2001-02-11-anonymous-NF-PM1B1=1000000, B2=100000000
2001-02-04-anonymous-NF-PM1B1=1000000, B2=100000000
2000-07-03-anonymous-NFno factor TF: 1-56
2000-01-19-anonymous-NFno factor TF: 54-55
1999-11-24-anonymous-NFno factor TF: 53-54
1998-05-23Alex KruppaNFno factor TF: 52-53
1998-05-23Alex KruppaNFno factor TF: 51-52
1998-05-16Alex KruppaNFno factor TF: 51-52