is 2 49389467 - 1
has 14867712 decimal digits
takes 90.479 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
Actual2692.417362.3188 %----2.417362.3188 %
Target27338.729864.3836 %320000500000008.03993.6770 %46.769765.6932 %
Difference-4-36.3126-2.0647 %-320000-50000000-8.0399-3.6770 %-44.3524-3.3743 %

Known prime factors (1 factor, 76.9 bits, 0.00015576% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
493894671439268920791949810491512476.9301457060592283725
3 × 52 × 112 × 13 × 17 × 23 × 4007 × 7883
2010-01-2940077883586.530.01120.0217

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2010-01-29Mark Filipski22476.9301.6750.000%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2003-11-08Team Prime Ribv4_computers212590.001
2007-08-141997rj7v4_computers212630.020
2008-06-03ANONYMOUSManual testing212640.038
2008-07-25andreasbomkev4_computers2642692.345


ECM factoring results:
No ECM results for M49389467


Lucas-Lehmer results:
No L-L results for M49389467


PRP results:
No PRP results for M49389467


CERT results:
No CERT results for M49389467


P-1 factor-bounds graph:
102
103
104
102
103
104
TF factor-bounds graph:
269
264
263
259
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