is 2 57262661 - 1
has 17237779 decimal digits
takes 121.365 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
Actual2681.040961.7647%----1.040961.7647%0.0000%
PrimeNet2692.084962.3188%260000110000002.59735.5322%4.682264.4034%2.0846%
GPU7227333.404764.3836%400000130000003.33904.0708%36.743765.8334%1.4499%
Difference-5-32.3638-2.6189%-400000-13000000-3.3390-4.0708%-35.7028-4.0687%-4.0687%

Known prime factors (1 factor, 69.0 bits, 0.00012049% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
572626615893235295664205834712168.9985145792382635
3 × 5 × 16061 × 21359369
2011-04-2616061213593691.07143.62306.6796

P-1 results:
No P-1 results for M57262661


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2011-04-26T23:42:00Per Jessenbeaufort4??68.998210.031247.50.062
1999-12-23T00:00:00ANONYMOUSv4_computers21253--2.09547e-5--
2000-03-08T00:00:00ANONYMOUSv4_computers21254--4.19094e-5--
2000-06-28T00:00:00ANONYMOUSv4_computers21256--0.000--
2000-06-29T00:00:00ANONYMOUSv4_computers21256--0.000--
2001-09-22T00:00:00ANONYMOUSv4_computers21257--0.000--
2002-11-02T00:00:00ANONYMOUSv4_computers21258--0.001--
2003-08-25T00:00:00Team Prime Ribv4_computers21260--0.003--
Missing TF 60 - 61
Missing TF 61 - 62
Missing TF 62 - 63
2008-09-21T19:10:00Sturle Sundeiago.ifi263264--0.034--
2008-09-23T19:30:00Sturle Sundedoak.ifi264265--0.065--
2008-09-24T20:07:00Sturle Sundedoak.ifi265266--0.130--
2008-09-25T04:51:00Sturle Sundefigaro.ifi266267--0.261--
2009-05-28T02:26:00RoaldSmXP15267268--0.522--


ECM factoring results:
No ECM results for M57262661


Lucas-Lehmer results:
No L-L results for M57262661


PRP results:
No PRP results for M57262661


P-1 factor-bounds graph:
103
104
105
103
104
105
106
107
108
TF factor-bounds graph:
268
267
266
265
264
260
258
257
256
254
253
2
250
260
270
280
290
2100
Last modified: 2011-04-26T23:42:45+00:00