Marin Mersenne 2^P-1
Username
Password
Forgot password?
White
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
17623Composite, with 5 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
5674607722.4old
37363579691031.82008-08-26 19:58:51
53843551911032.32008-08-26 19:58:51
220699613653760732985592374.22008-10-16 23:57:27
124272792657949398126080182217364896222929743139.82023-04-12 17:01:39
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000002208 / 9201
Estimated T-Level: 41.2
TF below 2^132 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-09-21Oliver KruseAA61FFEAB5419F384013
Verified (Factored)2017-10-02kkmrkkblmbrbkAA61FFEAB5419F384013
Verified (Factored)2017-12-07ATHAA61FFEAB5419F384756813
Verified (Factored)2020-04-17Oliver Kruse9AB40E5EC511ECDB41716153
Verified2023-04-12JacobZ9AB40E5EC511ECDB5888753
P-1 factors
DateFactorB1B2
2023-04-121242727926579493981260801822173648962229297600000000017613225783603450
History
DateUserTypeResult
2025-01-08masserNF-PP1
Start=6/5, B1=132000000, B2=131868000000
2024-12-28masserNF-PP1
Start=138/19, B1=132000000, B2=131868000000
2024-12-17masserNF-PP1
Start=2/7, B1=132000000, B2=131868000000
2023-04-12JacobZC-PRP
M17623/5674607/3736357969/5384355191/22069961365376073298559/1242727926579493981260801822173648962229297 : 9AB40E5EC511ECDB
PRP: Verified
PRP without proof (small exponent)
2023-04-12JacobZF-PM1
Factor: 1242727926579493981260801822173648962229297 / (P-1, B1=6000000000, B2=17613225783603450)
2022-02-06Lisander ViaeneNF-PM1
B1=50000
2020-04-17Oliver KruseC-PRP
M17623/5674607/3736357969/5384355191/22069961365376073298559 : 9AB40E5EC511ECDB
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M17623/5674607/3736357969/5384355191/22069961365376073298559 : AA61FFEAB5419F38
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M17623/5674607/3736357969/5384355191/22069961365376073298559 : AA61FFEAB5419F38
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M17623/5674607/3736357969/5384355191/22069961365376073298559 : AA61FFEAB5419F38
PRP without proof (not generated)
2008-10-16-Anonymous-F-ECM
Factor: 22069961365376073298559
2008-08-26-Anonymous-F
Factor: 5384355191
2008-08-26-Anonymous-F
Factor: 3736357969