is 2 25895767 - 1
has 7795403 decimal digits
takes 22.191 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2671.147462.6866 %----1.147462.6866 %
Target2709.227464.2857 %190000275000002.08493.7819 %11.312365.6364 %
Difference-3-8.0800-1.5991 %-190000-27500000-2.0849-3.7819 %-10.1649-2.9498 %

Known prime factors (3 factors, 140.1 bits, 0.00054119% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
2589576717377095487691340.66033552
24 × 32 × 233
2003-04-27162337.140e-93.457e-54.046e-5
258957672131341780458891547.5994115232
25 × 33 × 11 × 433
2003-04-27324331.262e-66.691e-58.092e-5
2589576741646537883593771651.88780411864
23 × 13 × 23 × 33617
2003-04-2723336171.350e-50.00230.0043

4 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2008-07-15George WoltmanManual testing43140.1461.2330.000%


Trial Factoring results:
5758596061626364656667686970
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2003-04-27ANONYMOUSv4_computers??
40.660
47.599
51.887
13
15
16
2003-05-04ANONYMOUSv4_computers??
40.660
47.599
51.887
13
15
16
2003-05-11ANONYMOUSv4_computers??
40.660
47.599
51.887
13
15
16


ECM factoring results:
No ECM results for M25895767


Lucas-Lehmer results:
No L-L results for M25895767


PRP results:
No PRP results for M25895767


CERT results:
No CERT results for M25895767


P-1 factor-bounds graph:
100
101
102
100
101
102
103
104
105
TF factor-bounds graph:
this exponent TF target: 70
TF double-checked to: 67
250
260
270
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Last modified: 2024-03-13T02:15:48+00:00