is 256238827-1
has 16,929,574 decimal digits
takes 119.195 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
Actual27217.004963.8889%----17.004963.8889%1.5700%
PrimeNet2692.122962.3188%240,00010,000,0002.37175.3704%4.494667.6893%5.3704%
GPU7227334.012964.3836%400,00013,000,0003.33904.0616%37.351968.4451%4.0616%
Difference-1-17.0080-0.4947%-400,000-13,000,000-3.3390-4.0616%-20.3470-4.5562%-4.5562%

Known prime factors (1 factor, 124.4 bits, 0.00022119% known):
Remaining cofactor is PRP status unknown

GHz-days
exponentfactordigitsbits*kmin B1min B2date foundmin. TFmin. P-1normal P-1
562388272799778305691636805200088286304377429738124.397248918625711346789398726993924
22 × 32 × 173 × 6101 × 36191 × 74923 × 241781 × 9992401
241,7819,992,4012012-07-012.985e+92.37563.1249

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2012-07-01T18:26:00TheJudgerManual testing-279,977,830,569,163,680-520,008,828,630,437,76038124.397-238.4-nan%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-12-15T00:00:00ANONYMOUSv4_computers?253--2.13362e-5--
2000-01-19T00:00:00ANONYMOUSv4_computers?253--2.13362e-5--
2000-03-08T00:00:00ANONYMOUSv4_computers?254--4.26724e-5--
2000-06-11T00:00:00ANONYMOUSv4_computers?256--0.000--
2001-09-22T00:00:00ANONYMOUSv4_computers?257--0.000--
2002-09-14T00:00:00ANONYMOUSv4_computers?258--0.001--
2004-10-03T00:00:001997rj7v4_computers?260--0.001--
2008-07-09T18:47:00Sturle Sundevancraft.ifi263264--0.035--
2008-07-10T02:34:00Sturle Sundevancraft.ifi264265--0.066--
2008-07-10T12:21:00Sturle Sundehaydn.ifi265266--0.133--
2008-07-10T23:41:00Sturle Sundehomilius.ifi266267--0.266--
2009-11-22T04:06:00arnaudSRV-140267268--0.532--
2011-04-18T20:04:00S34960v5cheepnis268269--1.063--
2011-06-05T18:32:00UngelovendeManual testing269270--2.126--
2012-03-21T14:35:00Pi_RhoManual testing270271--4.252--
2012-06-22T20:45:00Jerry HallettManual testing271272--8.504--


ECM factoring results:
Exponent "56238827" not found


Lucas-Lehmer results:
Exponent "56238827" not found


PRP results:
Exponent "56238827" not found


P-1 factor-bounds graph:
TF factor-bounds graph:
272
271
270
269
268
267
266
265
264
260
258
257
256
254
253
250
260
270
280
290
2100
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2120
2130
Last modified: 2012-07-01T18:26:33+00:00