is 2 108228391 - 1
has 32579993 decimal digits
takes 475.002 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual276141.404664.4737%7960002423900013.19394.0534%154.598565.9137%1.4400%
PrimeNet2728.836362.5000%4500002400000011.02915.4969%19.865364.5613%2.0613%
GPU72276141.404664.4737%7000002400000012.53343.9802%153.938065.8877%1.4140%
Difference---+96000+239000+0.6605+0.0732%+0.6605+0.0260%+0.0260%

Known prime factors (1 factor, 96.0 bits, 0.00008870% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
108228391789467553546512656685566876732995.995364722946655703611396
22 × 857 × 11701 × 207293 × 43864649
2021-12-2920729343864649124,140,36316.45628.406

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2021-12-29T18:11:11Teal DulcetAWS79600024239000122995.99513.19950.026.394.053%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-04-26T14:13:00Martti JärviCassady263264--0.018--
2010-09-09T21:45:00WPSs2264265--0.035--
2012-05-20T12:59:00KoekiePC0620265266--0.069--
2013-09-27T15:22:00processinfoManual testing266268--0.414--
2013-09-27T15:22:00processinfoManual testing268269--0.552--
2013-09-27T15:22:00processinfoManual testing269270--1.105--
2013-09-27T15:22:00processinfoManual testing270271--2.209--
2015-01-27T16:57:00XebecerManual testing271272--4.419--
2019-11-09T15:45:16Niels_Mache_NextcloudManual testing272273--8.838--
2019-11-09T15:45:16Niels_Mache_NextcloudManual testing273274--17.68--
2021-04-18T20:41:15TheJudgerManual testing274275--35.35--
2021-04-18T20:41:15TheJudgerManual testing275276--70.70--


ECM factoring results:
No ECM results for M108228391


Lucas-Lehmer results:
No L-L results for M108228391


PRP results:
No PRP results for M108228391


P-1 factor-bounds graph:
B1 = 796000, B2 = 24239000 (P-1 stage 2)
B1 = 796000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2021-12-29T18:11:11+00:00