is 2 25171901 - 1
has 7577498 decimal digits
takes 21.571 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
Actual2671.180462.6866%----1.180462.6866%0.0000%
PrimeNet2660.586762.1212%11000040000000.40004.9821%0.986764.0084%1.8872%
GPU722709.492864.2857%18000055000000.58383.7361%10.076665.6200%1.3343%
Difference-3-8.3123-1.5991%-180000-5500000-0.5838-3.7361%-8.8961-2.9335%-2.9335%

Known prime factors (2 factors, 82.2 bits, 0.00032675% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
25171901151031407927.1703
3
-137.108e-131.378e-62.529e-6
25171901380492051280947591755.079755787279
3 × 13 × 113 × 317 × 541
2008-03-113175410.00030.00040.0008

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
2517190157466249857277666810959132582.249
P-1 results:
No P-1 results for M25171901


Trial Factoring results:
No TF results for M25171901


ECM factoring results:
No ECM results for M25171901


Lucas-Lehmer results:
No L-L results for M25171901


PRP results:
No PRP results for M25171901


P-1 factor-bounds graph:
100
101
102
103
100
101
102
103
TF factor-bounds graph:
267
220
230
240
250
260
270
280
290
2100
Last modified: 2008-03-11T03:46:43+00:00