is 2 108213389 - 1
has 32575477 decimal digits
takes 474.937 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
Actual276141.424264.4737%9230005331800024.04044.7523%165.464666.1620%1.6883%
PrimeNet2728.837562.5000%4500002400000011.02915.4968%19.866564.5613%2.0613%
GPU72276141.424264.4737%7000002400000012.53343.9802%153.957665.8877%1.4140%
Difference---+223000+29318000+11.5070+0.7722%+11.5070+0.2743%+0.2743%

Known prime factors (1 factor, 129.6 bits, 0.00011974% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
108213389101494629777691445567971077854013601627140129.5774689559707703611683761751415715
5 × 792 × 89 × 719 × 6217 × 14221 × 904219 × 29376791
2021-12-28904219293767911.602e+915.62619.024

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2021-12-28T06:52:52Ben Deloi-0ed0a82c4b0fbef469230005331800040129.57724.04949.948.084.752%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-04-27T07:50:00OS1L2263264--0.018--
2010-09-11T13:37:00RichardUNKNOWN264265--0.035--
2012-05-23T01:07:00omiXorpLLB03-z800-11265266--0.069--
2014-11-24T08:40:00g0bManual testing266267--0.138--
2015-01-27T19:29:00el groccoManual testing267268--0.276--
2015-01-28T01:46:00wahbapManual testing268269--0.552--
2015-02-03T09:23:00duklahome269270--1.105--
2015-05-06T08:07:00Choi4KANG270271--2.210--
2019-01-20T11:17:00Niels_Mache_NextcloudManual testing271272--4.420--
2019-11-10T17:36:12Niels_Mache_NextcloudManual testing272273--8.839--
2019-11-10T17:36:12Niels_Mache_NextcloudManual testing273274--17.68--
2021-04-18T20:49:14TheJudgerManual testing274275--35.36--
2021-04-18T20:49:14TheJudgerManual testing275276--70.71--


ECM factoring results:
No ECM results for M108213389


Lucas-Lehmer results:
No L-L results for M108213389


PRP results:
No PRP results for M108213389


P-1 factor-bounds graph:
B1 = 923000, B2 = 53318000 (P-1 stage 2)
B1 = 923000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2021-12-28T06:52:52+00:00