is 2 25208653 - 1
has 7588561 decimal digits
takes 21.602 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
Actual2671.178762.6866%----1.178762.6866%0.0000%
PrimeNet2660.585862.1212%11000040000000.40004.9831%0.985964.0087%1.8875%
GPU722709.478964.2857%18000055000000.58383.7368%10.062765.6203%1.3346%
Difference-3-8.3002-1.5991%-180000-5500000-0.5838-3.7368%-8.8840-2.9337%-2.9337%

Known prime factors (1 factor, 44.6 bits, 0.00017693% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
25208653267177438031931444.603529932
22 × 3 × 13 × 43 × 79
-43791.584e-75.587e-50.0001

P-1 results:
No P-1 results for M25208653


Trial Factoring results:
No TF results for M25208653


ECM factoring results:
No ECM results for M25208653


Lucas-Lehmer results:
No L-L results for M25208653


PRP results:
No PRP results for M25208653


P-1 factor-bounds graph:
100
101
102
100
101
102
TF factor-bounds graph:
267
240
250
260
270
280
290
2100