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:










MnStatusDetails
3967Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
63473516.0old
332829670722169014111853564812994.7old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
504400000016550 / 16550
5511000000013989 / 40830
Estimated T-Level: 51.7
TF below 2^167 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver Kruse1D415DAE18B788042013
Verified2017-10-12kkmrkkblmbrbk1D415DAE18B78804245813
Verified2020-04-17Oliver Kruse47E46DDFAC8DD8A52258753
Verified2024-02-03Wentao Huang47E46DDFAC8DD8A52310953
History
DateUserTypeResult
2024-02-03Wentao HuangC-PRP
M3967/63473/33282967072216901411185356481 : 47E46DDFAC8DD8A5
PRP: Verified
PRP without proof (small exponent)
2023-05-14JacobZNF-PM1
B1=66000000000, B2=5781650744289420
2021-09-09Jinyuan WangNF-PM1
B1=1300000000, B2=13000000000, E=12
2020-04-17Oliver KruseC-PRP
M3967/63473/33282967072216901411185356481 : 47E46DDFAC8DD8A5
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M3967/63473/33282967072216901411185356481 : 1D415DAE18B78804
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M3967/63473/33282967072216901411185356481 : 1D415DAE18B78804
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M3967/63473/33282967072216901411185356481 : 1D415DAE18B78804
PRP without proof (not generated)