is 2 25473241 - 1
has 7668210 decimal digits
takes 21.829 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
Actual2671.166562.6866%----1.166562.6866%0.0000%
PrimeNet2660.579862.1212%12000045000000.44565.1688%1.025464.0791%1.9579%
GPU722709.380564.2857%18000055000000.58383.7421%9.964365.6222%1.3365%
Difference-3-8.2140-1.5991%-180000-5500000-0.5838-3.7421%-8.7978-2.9356%-2.9356%

Known prime factors (2 factors, 81.2 bits, 0.00031879% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
254732415858335965191239.09211499
3 × 3833
-338334.281e-90.00030.0005
2547324147647187825691342.11693524
22 × 103 × 227
2008-09-081032272.860e-80.00010.0003

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
2547324127913323407940284362773112581.207
P-1 results:
No P-1 results for M25473241


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-09-08T21:33:00Will EdgingtonManual testing??42.116135.59582e-945.041.15453e-8


ECM factoring results:
No ECM results for M25473241


Lucas-Lehmer results:
No L-L results for M25473241


PRP results:
No PRP results for M25473241


P-1 factor-bounds graph:
100
101
102
103
100
101
102
103
104
TF factor-bounds graph:
267
2
230
240
250
260
270
280
290
2100
Last modified: 2008-09-08T21:33:37+00:00