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

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Exponent Range:










MnStatusDetails
12007Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
18658879824.2old
8362478221031576820813277299884932106.02010-01-12 14:54:16
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000003118 / 9201
Estimated T-Level: 41.7
TF below 2^134 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver Kruse976365E1200591E12013
Verified2017-10-02kkmrkkblmbrbk976365E1200591E12013
Verified2017-12-07ATH976365E1200591E12121813
Verified2020-04-17Oliver Kruse11211E9BA2B1951B2403453
Verified2023-05-19-Anonymous-11211E9BA2B1951B2645253
P-1 factors
DateFactorB1B2
2023-04-0683624782210315768208132772998849100000000000122192573512709696
History
DateUserTypeResult
2023-05-19-Anonymous-C-PRP
M12007/18658879/83624782210315768208132772998849 : 11211E9BA2B1951B
PRP: Verified
PRP without proof (small exponent)
2023-04-06-Anonymous-F-PM1
Factor: 83624782210315768208132772998849 / (P-1, B1=100000000000, B2=122192573512709700)
2020-04-17Oliver KruseC-PRP
M12007/18658879/83624782210315768208132772998849 : 11211E9BA2B1951B
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M12007/18658879/83624782210315768208132772998849 : 976365E1200591E1
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M12007/18658879/83624782210315768208132772998849 : 976365E1200591E1
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M12007/18658879/83624782210315768208132772998849 : 976365E1200591E1
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M12007/18658879/83624782210315768208132772998849 : 976365E1200591E1
PRP without proof (not generated)
2016-09-08kkmrkkblmbrbkNF-PM1
B1=100000000, B2=10000000000, E=12
2010-01-12Matthias WurtingerF-ECM
Factor: 83624782210315768208132772998849