is 256320631-1
has 16,954,200 decimal digits
takes 119.368 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
Actual2692.119862.3188%650,00014,625,0004.33756.4175%6.457368.7363%6.4175%
PrimeNet2692.119862.3188%240,00010,000,0002.37175.3714%4.491567.6903%5.3714%
GPU7227333.963564.3836%400,00013,000,0003.33904.0623%37.302468.4459%4.0623%
Difference-4-31.8437-2.0647%+250,000+1,625,000+0.9985+2.3551%-30.8452+0.2904%+0.2904%

Known prime factors (1 factor, 124.3 bits, 0.00022068% known):
Remaining cofactor is PRP status unknown

GHz-days
exponentfactordigitsbits*kmin B1min B2date foundmin. TFmin. P-1normal P-1
563206312600171578055215081548864074181703900138124.290230836509808920205594719284500
22 × 53 × 89 × 2287 × 21017 × 47681 × 314329 × 7200751
314,3297,200,7512011-10-202.733e+92.11902.2518

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2011-10-20T16:30:00NesowaNCHDATA650,00014,625,00038124.2904.337238.78.6756.417%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-12-15T00:00:00ANONYMOUSv4_computers?253--2.13052e-5--
2000-01-19T00:00:00ANONYMOUSv4_computers?253--2.13052e-5--
2000-03-08T00:00:00ANONYMOUSv4_computers?254--4.26104e-5--
2000-06-11T00:00:00ANONYMOUSv4_computers?256--0.000--
2001-09-22T00:00:00ANONYMOUSv4_computers?257--0.000--
2002-09-22T00:00:00ANONYMOUSv4_computers?258--0.001--
2008-07-17T07:41:00Sturle Sundebach.ifi263264--0.035--
2008-07-17T17:59:00Sturle Sundeaalto.ifi264265--0.066--
2008-07-18T02:38:00Sturle Sundeaalto.ifi265266--0.133--
2008-07-18T18:27:00Sturle Sundeaalto.ifi266267--0.265--
2009-07-25T04:25:00SAHS Tech Deptcad7267268--0.531--
2011-07-28T19:25:00oilwarzonedotcomsuei5268269--1.061--


ECM factoring results:
Exponent "56320631" not found


Lucas-Lehmer results:
Exponent "56320631" not found


PRP results:
Exponent "56320631" not found


P-1 factor-bounds graph:
B1 = 650,000, B2 = 14,625,000 (stage 2)
B1 = 650,000 (stage 1)
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104
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107
108
TF factor-bounds graph:
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264
258
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254
253
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2100
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Last modified: 2011-10-20T16:30:19+00:00