is 255513753-1
has 16,711,305 decimal digits
takes 117.658 GHz-days to do one L-L test
Last-known PrimeNet details:
-unknown- L-L tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2660.266060.6061%550,00011,550,0003.53217.9419%3.798168.5479%6.2291%
PrimeNet2692.150662.3188%240,00010,000,0002.37175.3618%4.522367.6806%5.3618%
GPU7227334.457164.3836%360,00012,000,0003.05533.9347%37.512468.3183%3.9347%
Difference-7-34.1911-3.7775%+190,000-450,000+0.4767+4.0072%-33.7143+0.2297%+0.2297%

Known prime factors (1 factor, 124.4 bits, 0.00022415% known):
Remaining cofactor is PRP status unknown

GHz-days
exponentfactordigitsbits*kmin B1min B2date foundmin. TFmin. P-1normal P-1
555137532874108791476196332848345213929950702338124.434258864572845236776988248769087
34 × 41 × 491 × 613 × 9923 × 56267 × 335261 × 1383509
335,2611,383,5092012-10-122.890e+91.20582.0969

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2012-10-12T21:02:00ChuckChuck-HP550,00011,550,00038124.4343.532235.37.0647.942%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-12-15T00:00:00ANONYMOUSv4_computers?253--2.16149e-5--
2000-01-19T00:00:00ANONYMOUSv4_computers?253--2.16149e-5--
2000-03-01T00:00:00ANONYMOUSv4_computers?254--4.32298e-5--
2000-05-31T00:00:00ANONYMOUSv4_computers?256--0.000--
2001-09-30T00:00:00ANONYMOUSv4_computers?257--0.000--
2002-07-27T00:00:00ANONYMOUSv4_computers?258--0.001--
2008-07-02T00:22:00ANONYMOUSManual testing?264--0.035--
2009-03-06T07:47:00symalladold_laptop264265--0.067--
2009-03-07T16:31:00symalladold_laptop265266--0.135--
2009-03-13T04:59:00RMAC9.5v4_computers?269--1.077--
2009-03-24T00:00:00RMAC9.5v4_computers?269--1.077--
2011-07-19T04:58:00sannerud.comJimEmcLap269270--2.154--
2012-04-04T12:21:00Craig MeyersManual testing270272--12.92--


ECM factoring results:
Exponent "55513753" not found


Lucas-Lehmer results:
Exponent "55513753" not found


PRP results:
Exponent "55513753" not found


P-1 factor-bounds graph:
B1 = 550,000, B2 = 11,550,000 (stage 2)
B1 = 550,000 (stage 1)
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108
TF factor-bounds graph:
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264
258
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Last modified: 2012-10-12T21:02:27+00:00