is 2 49509289 - 1
has 14903782 decimal digits
takes 90.698 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
Actual2692.411462.3188 %----2.411462.3188 %
Target27338.636164.3836 %320000500000008.03993.6781 %46.676065.6936 %
Difference-4-36.2247-2.0647 %-320000-50000000-8.0399-3.6781 %-44.2646-3.3747 %

Known prime factors (1 factor, 69.4 bits, 0.00014024% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
495092897963249743479447457292169.4328042177442176
27 × 317 × 797 × 248683
2010-04-217972486832.62890.03800.0672

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2010-04-21kasprousekasprouse2169.4322.4120.000%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2000-10-15Jossv4_computers212580.001
2003-12-13Team Prime Ribv4_computers212590.001
2007-06-151997rj7v4_computers212630.020
2008-08-07S485122v4_computers2632681.172
2008-08-26S485122v4_computers2682691.207


ECM factoring results:
No ECM results for M49509289


Lucas-Lehmer results:
No L-L results for M49509289


PRP results:
No PRP results for M49509289


CERT results:
No CERT results for M49509289


P-1 factor-bounds graph:
101
102
103
101
102
103
104
105
106
TF factor-bounds graph:
269
268
263
259
258
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