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
7867
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
38099237618407684974242573814376073996864999345148.1old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
504400000012470 / 16550
Estimated T-Level: 48.8
TF below 2^157 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 Kruse0C587FBF573C76051013
Verified
No proof (small exponent)
2017-10-02kkmrkkblmbrbk0C587FBF573C76051013
Verified
No proof (small exponent)
2017-12-07ATH0C587FBF573C76051613213
Verified
No proof (small exponent)
2020-04-17Oliver Kruse8AD274FD6DCBB5011157953
Verified
No proof (small exponent)
2024-02-03Wentao Huang8AD274FD6DCBB5011691253
History
DateUserTypeResult
2025-05-29masserNF-PP1Start=93/47, B1=1300000000, B2=1298700000000
2024-12-11yuriy_5-1NF-PM1B1=24000000000, B2=93848103835646160
2024-02-03Wentao HuangC-PRPM7867/380992376184076849742425738143760739968649993 : 8AD274FD6DCBB501
2021-07-10ViliamFNF-PM1B1=1000000000, B2=201000000000
2020-04-17Oliver KruseC-PRPM7867/380992376184076849742425738143760739968649993 : 8AD274FD6DCBB501
2017-12-07ATHC-PRPM7867/380992376184076849742425738143760739968649993 : 0C587FBF573C7605
2017-10-02kkmrkkblmbrbkC-PRPM7867/380992376184076849742425738143760739968649993 : 0C587FBF573C7605
2017-09-21Oliver KruseC-PRPM7867/known_factors : 0C587FBF573C7605
2008-06-13DaveAF-ECMFactor: 380992376184076849742425738143760739968649993
2003-02-09-anonymous-NF-PM1B1=4290000000
2002-10-19-anonymous-NF-PM1B1=3221225472, B2=4290000000, E=48
2002-08-24-anonymous-NF-PM1B1=2147483648, B2=4290000000, E=48
2002-06-09-anonymous-NF-PM1B1=1073741824, B2=4290000000, E=48
2002-04-20-anonymous-NFno factor TF: 1-57
2001-09-01-anonymous-NF-PM1B1=3000000000, B2=4290000000
2001-08-31-anonymous-NF-PM1B1=3000000000, B2=4290000000
2001-06-23-anonymous-NF-PM1B1=43000000, B2=4290000000
2001-02-11-anonymous-NF-PM1B1=1000000, B2=100000000
2000-07-25-anonymous-NFno factor TF: 1-56
2000-02-23-anonymous-NFno factor TF: 54-55
1999-12-30-anonymous-NFno factor TF: 53-54
1999-09-22-anonymous-NFno factor TF: 52-53