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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
18869Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
264167618.0old
629072419618140711755.82008-08-26 19:58:53
7634128018192192807955654365623775996738125.82017-10-01 04:02:46
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000001729 / 4588
Estimated T-Level: 36.9
TF below 2^118 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-09-21Oliver Kruse0DDDF3BC8AA7CEF42013
Verified2017-10-02kkmrkkblmbrbk22DA446EA6939A1B3013
Verified2017-10-09Chang Chia-Tche22DA446EA6939A1B3013
Verified2017-10-13Oliver Kruse22DA446EA6939A1B31007913
Verified2020-04-17Oliver Kruse2F8748A52CA60B473209053
Verified2024-07-01kkmrkkblmbrbk2F8748A52CA60B4731508553
History
DateUserTypeResult
2024-12-30masserNF-PP1
Start=6/5, B1=132000000, B2=131868000000
2024-12-21masserNF-PP1
Start=80/71, B1=132000000, B2=131868000000
2024-12-15masserNF-PP1
Start=2/7, B1=132000000, B2=131868000000
2024-07-01kkmrkkblmbrbkC-PRP
M18869/264167/62907241961814071/76341280181921928079556543656237759967 : 2F8748A52CA60B47
PRP: Verified
PRP without proof (small exponent)
2023-04-18JacobZNF-PM1
B1=5600000000, B2=16709983434234090
2022-02-06Lisander ViaeneNF-PM1
B1=50000
2020-04-17Oliver KruseC-PRP
M18869/264167/62907241961814071/76341280181921928079556543656237759967 : 2F8748A52CA60B47
PRP: Verified
PRP without proof (small exponent)
2017-10-13Oliver KruseC-PRP
M18869/264167/62907241961814071/76341280181921928079556543656237759967 : 22DA446EA6939A1B
PRP: Verified
PRP without proof (small exponent)
2017-10-09Chang Chia-TcheC-PRP
M18869/known_factors : 22DA446EA6939A1B
PRP: Verified
PRP without proof (not generated)
2017-10-02kkmrkkblmbrbkC-PRP
M18869/264167/62907241961814071/76341280181921928079556543656237759967 : 22DA446EA6939A1B
PRP: Verified
PRP without proof (not generated)
2017-10-01Oliver KruseC-PRP
M18869/264167/62907241961814071/76341280181921928079556543656237759967 : 22DA446EA6939A1B
PRP without proof (not generated)
2017-10-01kkmrkkblmbrbkF-ECM
Factor: 76341280181921928079556543656237759967 / (ECM curve 979, B1=1000000, B2=100000000)
2017-09-21Oliver KruseC-PRP
M18869/264167/62907241961814071 : 0DDDF3BC8AA7CEF4
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M18869/264167/62907241961814071 : 0DDDF3BC8AA7CEF4
PRP without proof (not generated)
2008-08-26-Anonymous-F-ECM
Factor: 62907241961814071