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
12007
Composite, with 2 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
18658879824.2old
8362478221031576820813277299884932106.02010-01-12 14:54:16
P-1 factors
DateFactorsB1B2
2023-04-06No new factors discovered100000000000122192573512709696
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000003313 / 9201
Estimated T-Level: 41.8 ⓘ
TF below 2^134 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Verified
No proof (small exponent)
2017-09-21Oliver Kruse976365E1200591E12013
Verified
No proof (small exponent)
2017-10-02kkmrkkblmbrbk976365E1200591E12013
Verified
No proof (small exponent)
2017-12-07ATH976365E1200591E12121813
Verified
No proof (small exponent)
2020-04-17Oliver Kruse11211E9BA2B1951B2403453
Verified
No proof (small exponent)
2023-05-19-anonymous-11211E9BA2B1951B2645253
History
DateUserTypeResult
2025-03-09masserNF-PP1Start=191/31, B1=430000000, B2=429570000000
2025-02-27masserNF-PP1Start=6/5, B1=430000000, B2=429570000000
2025-01-21masserNF-PP1Start=2/7, B1=430000000, B2=429570000000
2023-05-19-anonymous-C-PRPM12007/18658879/83624782210315768208132772998849 : 11211E9BA2B1951B
2023-04-06-anonymous-F-PM1Factor: 83624782210315768208132772998849 / B1=100000000000, B2=122192573512709700
2020-04-17Oliver KruseC-PRPM12007/18658879/83624782210315768208132772998849 : 11211E9BA2B1951B
2017-12-07ATHC-PRPM12007/18658879/83624782210315768208132772998849 : 976365E1200591E1
2017-10-02kkmrkkblmbrbkC-PRPM12007/18658879/83624782210315768208132772998849 : 976365E1200591E1
2017-09-21Oliver KruseC-PRPM12007/18658879/83624782210315768208132772998849 : 976365E1200591E1
2017-09-21Oliver KruseC-PRPM12007/18658879/83624782210315768208132772998849 : 976365E1200591E1
2016-09-08kkmrkkblmbrbkNF-PM1B1=100000000, B2=10000000000, E=12
2010-01-12Matthias WurtingerF-ECMFactor: 83624782210315768208132772998849