is 2 25171879 - 1
has 7577491 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 (1 factor, 58.9 bits, 0.00023413% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
251718795507477484485336631858.93410939742489
13 × 31 × 27145763
-31271457630.00251.83783.4324

P-1 results:
No P-1 results for M25171879


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-08-12T00:00:00Net_Forcev4_computers21256--0.000--
2001-08-24T00:00:00Mattv4_computers21258--0.002--


ECM factoring results:
No ECM results for M25171879


Lucas-Lehmer results:
No L-L results for M25171879


PRP results:
No PRP results for M25171879


P-1 factor-bounds graph:
100
101
102
100
101
102
103
104
105
106
107
108
TF factor-bounds graph:
267
258
256
250
260
270
280
290
2100
Last modified: 2001-08-24T00:00:00+00:00