is 2 64828783 - 1
has 19515409 decimal digits
takes 157.255 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
Actual2680.919461.7647%----0.919461.7647%0.0000%
PrimeNet2703.685962.8571%280000130000003.42245.2973%7.108264.8247%1.9676%
GPU7227459.014964.8649%450000140000004.17943.8605%63.194366.2213%1.3564%
Difference-6-58.0955-3.1002%-450000-14000000-4.1794-3.8605%-62.2749-4.4565%-4.4565%

Known prime factors (2 factors, 132.1 bits, 0.00020374% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
64828783287692457750100655992064.641221886363153
3 × 7 × 13 × 17 × 47810033
2009-12-0817478100330.07409.161917.112
648287832002107886074671663272167.4401544150447861
7 × 7057 × 31258739
2022-08-037057312587390.76786.013611.188

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
64828783575991338425680814981786355132691388487340132.081
P-1 results:
No P-1 results for M64828783


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2009-12-08T09:01:00XenonD-net??64.641200.019324.10.039
2003-09-29T00:00:00ANONYMOUSv4_computers21259--0.001--
2004-02-14T00:00:00AxelFoxv4_computers21260--0.002--
2022-03-30T15:45:51LordJuliusManual testing260263--0.022--
2009-03-13T05:07:00chrisrogersbigblue263264--0.030--
2022-08-10T19:29:27LordJuliusManual testing2126764.641200.074324.10.153
2022-08-03T11:18:56TJAOIManual testing267268*67.440210.309323.30.636
2022-08-10T19:29:27LordJuliusManual testing26726867.440210.309323.30.636


ECM factoring results:
No ECM results for M64828783


Lucas-Lehmer results:
No L-L results for M64828783


PRP results:
No PRP results for M64828783


P-1 factor-bounds graph:
100
101
102
103
104
100
101
102
103
104
105
106
107
108
TF factor-bounds graph:
268
267
264
263
260
259
2
250
260
270
280
290
2100
Last modified: 2022-08-10T19:29:27+00:00