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
12853
Composite: 3 known prime factors
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
147813310638931691753.7old
52622640146915000365798355925632931343560952745148.62026-01-14 17:40:51
52670095819979367964201295635701989178131183204431876754178.52026-01-14 07:55:44
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001604 / 9201
Estimated T-Level: 40.9 ⓘ
TF below 2^131 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Factored
No proof (small exponent)
2017-09-21Oliver KruseEF13FA8DABE5E61B1013
Factored
No proof (small exponent)
2017-10-12kkmrkkblmbrbkEF13FA8DABE5E61B1775313
Factored
No proof (small exponent)
2020-04-17Oliver KruseBCD7EF6B5B2D93331481453
Factored
No proof (small exponent)
2024-07-01kkmrkkblmbrbkBCD7EF6B5B2D93331887853
History
DateUserTypeResult
2026-01-14Ryan PropperF-ECMFactor: 526226401469150003657983559256329313435609527
2026-01-14Ryan PropperF-ECMFactor: 526700958199793679642012956357019891781311832044318767
2025-03-04masserNF-PP1Start=129/13, B1=430000000, B2=429570000000
2025-02-19masserNF-PP1Start=6/5, B1=430000000, B2=429570000000
2025-01-16masserNF-PP1Start=2/7, B1=430000000, B2=429570000000
2024-07-01kkmrkkblmbrbkC-PRPM12853/14781331063893169 : BCD7EF6B5B2D9333
2023-05-27-anonymous-NF-PM1B1=100000000000, B2=120417199046794650
2023-05-15JacobZNF-PM1B1=8600000000, B2=36024966470342850
2022-02-05JossNF-PM1B1=1000000, B2=3910366209750
2020-04-17Oliver KruseC-PRPM12853/14781331063893169 : BCD7EF6B5B2D9333
2017-10-12kkmrkkblmbrbkC-PRPM12853/14781331063893169 : EF13FA8DABE5E61B
2017-09-21Oliver KruseC-PRPM12853/14781331063893169 : EF13FA8DABE5E61B
2017-09-21Oliver KruseC-PRPM12853/14781331063893169 : EF13FA8DABE5E61B