is 2 58250897 - 1
has 17535268 decimal digits
takes 123.460 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
Actual2670.510161.1940 %----0.510161.1940 %
Target27332.838064.3836 %4000006500000012.04574.0795 %44.883765.8365 %
Difference-6-32.3279-3.1895 %-400000-65000000-12.0457-4.0795 %-44.3736-4.6425 %

Known prime factors (1 factor, 68.4 bits, 0.00011750% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
582508974014711516586822944892168.4443446051239852
22 × 13 × 37 × 1791086923
2008-11-103717910869231.8078299.89560.12

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2008-11-10Team Prime Ribv4_computers2168.4443.1260.000%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2008-11-18Team Prime Ribv4_computers??
68.444
21
1999-12-23ANONYMOUSv4_computers212532.06000e-5
2000-02-09ANONYMOUSv4_computers212544.12000e-5
2000-06-28ANONYMOUSv4_computers212560.000
2001-07-17ANONYMOUSv4_computers212570.000
2002-09-22ANONYMOUSv4_computers212580.001
2003-07-30ANONYMOUSv4_computers212590.001
2003-12-13ANONYMOUSv4_computers212610.003
2022-06-27LordJuliusManual testing261263
2008-10-28Sturle Sundeletov.ifi2632640.032


ECM factoring results:
No ECM results for M58250897


Lucas-Lehmer results:
No L-L results for M58250897


PRP results:
No PRP results for M58250897


CERT results:
No CERT results for M58250897


P-1 factor-bounds graph:
100
101
102
100
101
102
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
264
263
261
259
258
257
256
254
253
this exponent TF target: 73
TF double-checked to: 67
250
260
270
280
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Last modified: 2024-03-13T02:15:48+00:00