is 2 103808857 - 1
has 31249580 decimal digits
takes 413.325 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
Actual276147.424764.4737%7400007400004.27231.5188%151.697065.0133%0.5396%
PrimeNet2729.212462.5000%450000220000009.37655.3886%18.588964.5207%2.0207%
GPU72276147.424764.4737%6500002200000010.46823.8580%157.893065.8443%1.3706%
Difference---+90000-21260000-6.1960-2.3392%-6.1960-0.8310%-0.8310%

Known prime factors (1 factor, 100.1 bits, 0.00009647% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
103808857140123231733099350963972792368731100.1456749098091557801805099
29 × 53 × 9173 × 10589 × 188621 × 239671
2021-05-121886212396711.325e+91.10502.2162

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2021-05-12T14:43:08Jwb52zClay74000074000031100.1454.272826.78.5451.519%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-04-17T14:36:00lindedskynet-node049263264--0.019--
2010-08-24T15:39:00Donna NoblePH9500264265--0.036--
2012-05-04T22:17:00RichardFX5000_1265266--0.072--
2014-05-12T04:36:00Smok_bmvManual testing266268--0.432--
2014-05-12T04:36:00Smok_bmvManual testing268269--0.576--
2014-05-12T04:36:00Smok_bmvManual testing269270--1.152--
2015-02-01T14:25:00JustinManual testing270271--2.304--
2017-12-10T09:33:09el groccoManual testing271272--4.607--
2019-09-11T10:30:00Niels_Mache_NextcloudManual testing272273--9.214--
2019-09-11T10:30:00Niels_Mache_NextcloudManual testing273274--18.43--
2021-01-22T03:19:21RichD0Manual testing274275--36.86--
2021-01-27T15:17:11tServoManual testing275276--73.71--


ECM factoring results:
No ECM results for M103808857


Lucas-Lehmer results:
No L-L results for M103808857


PRP results:
No PRP results for M103808857


P-1 factor-bounds graph:
B1 = 740000 (P-1 stage 1)
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104
105
106
TF factor-bounds graph:
276
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Last modified: 2021-05-12T14:55:09+00:00