is 251228763-1
has 15,421,395 decimal digits
takes 93.848 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
Actual2681.163561.7647%----1.163561.7647%-0.5541%
PrimeNet2692.330562.3188%220,0009,000,0001.85515.1475%4.185567.4664%5.1475%
GPU7227337.339364.3836%340,00011,000,0002.44593.7979%39.785268.1815%3.7979%
Difference-5-36.1758-2.6189%-340,000-11,000,000-2.4459-3.7979%-38.6217-6.4168%-6.4168%

Known prime factors (1 factor, 120.7 bits, 0.00023554% known):
Remaining cofactor is PRP status unknown

GHz-days
exponentfactordigitsbits*kmin B1min B2date foundmin. TFmin. P-1normal P-1
51228763210762298606917488078413724178268316937120.66520570699570368065307219473968
24 × 7 × 29 × 157 × 1297 × 2689 × 16829 × 88607 × 7756687
88,6077,756,6872010-01-053.045e+91.34512.0967

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2010-01-05T22:42:00Sid & AndyMr_Potato_Head-210,762,298,606,917,504-78,413,724,178,268,32037120.665-187.7-nan%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-10-15T00:00:00ANONYMOUSv4_computers?253--2.34228e-5--
2000-01-04T00:00:00ANONYMOUSv4_computers?253--2.34228e-5--
2000-02-16T00:00:00ANONYMOUSv4_computers?254--4.68457e-5--
2000-04-05T00:00:00ANONYMOUSv4_computers?256--0.000--
2001-05-06T00:00:00ANONYMOUSv4_computers?257--0.000--
2001-12-01T00:00:00Jocelyn Larouchev4_computers?258--0.001--
2003-10-14T00:00:00ANONYMOUSv4_computers?260--0.001--
2008-11-29T00:16:00Gnorfe_paustra263264--0.038--
2008-11-29T20:45:00Gnorfe_paustra264265--0.073--
2008-11-30T20:15:00Gnorfe_paustra265266--0.146--
2008-12-02T01:25:00Gnorfe_paustra266267--0.292--
2009-04-22T06:23:00Randy Gold267268--0.583--


ECM factoring results:
Exponent "51228763" not found


Lucas-Lehmer results:
Exponent "51228763" not found


PRP results:
Exponent "51228763" not found


P-1 factor-bounds graph:
TF factor-bounds graph:
268
267
266
265
264
260
258
257
256
254
253
250
260
270
280
290
2100
2110
2120
2130
Last modified: 2010-01-05T22:42:29+00:00