is 2 56053831 - 1
has 16873885 decimal digits
takes 118.803 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
Actual2704.262962.8571%----4.262962.8571%0.0000%
PrimeNet2692.129962.3188%240000100000002.37175.3682%4.501664.3417%2.0228%
GPU7227334.125164.3836%360000120000003.05533.9396%37.180465.7867%1.4031%
Difference-3-29.8623-1.5264%-360000-12000000-3.0553-3.9396%-32.9176-2.9295%-1.4031%

Known prime factors (2 factors, 134.0 bits, 0.00023913% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
560538311073409950781797679372166.541957481345728
26 × 33 × 554098001
2008-06-14645540980010.404792.776173.28
560538312090960058818869850412167.5031865135728920
23 × 3 × 5 × 131 × 569 × 208519
2022-09-215692085190.65480.03660.0652

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
560538312244457333823467866825056731716597043041741134.043
P-1 results:
No P-1 results for M56053831


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-06-14T20:20:00Sturle Sundenardi.ifi??66.541210.141243.80.290
1999-12-01T00:00:00ANONYMOUSv4_computers21253--2.14066e-5--
2000-01-19T00:00:00ANONYMOUSv4_computers21253--2.14066e-5--
2000-03-01T00:00:00ANONYMOUSv4_computers21254--4.28132e-5--
2000-05-31T00:00:00ANONYMOUSv4_computers21256--0.000--
2001-09-16T00:00:00ANONYMOUSv4_computers21257--0.000--
2002-08-31T00:00:00ANONYMOUSv4_computers21258--0.001--
2004-09-02T00:00:001997rj7v4_computers21260--0.003--
2022-06-15T04:49:11LordJuliusManual testing260263--0.026--
2008-06-13T03:42:00Sturle Sundescarpia.ifi263264--0.035--
2008-06-13T17:44:00Sturle Sundescarpia.ifi264265--0.067--
2008-06-14T04:37:00Sturle Sundescarpia.ifi265266--0.133--
2022-09-25T22:01:19LordJuliusManual testing26626766.541210.141243.80.290
2022-09-21T07:14:17TJAOIManual testing267268*67.503210.125243.30.255
2022-09-25T22:01:19LordJuliusManual testing26726867.503210.125243.30.255
2022-09-25T22:01:19LordJuliusManual testing268269--1.067--
2022-09-25T22:01:19LordJuliusManual testing269270--2.133--


ECM factoring results:
No ECM results for M56053831


Lucas-Lehmer results:
No L-L results for M56053831


PRP results:
No PRP results for M56053831


P-1 factor-bounds graph:
100
101
102
103
100
101
102
103
104
105
106
107
108
109
TF factor-bounds graph:
270
269
268
267
266
265
264
263
260
258
257
256
254
253
2
250
260
270
280
290
2100
Last modified: 2022-09-25T22:01:19+00:00