is 2 72661579 - 1
has 21873315 decimal digits
takes 194.269 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
Actual2670.408959.7015%----0.408959.7015%0.0000%
PrimeNet2703.288561.4286%320000140000004.13005.5361%7.418563.5639%2.1354%
GPU7227452.653263.5135%500000170000005.42344.1222%58.076665.0176%1.5040%
Difference-7-52.2443-3.8120%-500000-17000000-5.4234-4.1222%-57.6677-5.3161%-5.3161%

Known prime factors (2 factors, 119.8 bits, 0.00016483% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
7266157977165899346841611652.77753099520
210 × 3 × 5 × 3457
-102434571.158e-50.00450.0081
726615791467073843787399831932166.9921009525160324
22 × 252381290081
2021-03-1742523812900810.298753,30799,562

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
72661579113208072564082526871437610490330607337119.768
P-1 results:
No P-1 results for M72661579


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2021-03-17T11:42:38TJAOIManual testing266267*66.992210.095398.70.196


ECM factoring results:
No ECM results for M72661579


Lucas-Lehmer results:
No L-L results for M72661579


PRP results:
No PRP results for M72661579


P-1 factor-bounds graph:
100
101
102
103
104
100
101
102
103
104
105
106
107
108
109
1010
1011
1012
TF factor-bounds graph:
267
250
260
270
280
290
2100
Last modified: 2021-03-17T11:42:38+00:00