is 2 49199281 - 1
has 14810460 decimal digits
takes 90.130 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
Actual2692.426662.3188 %----2.426662.3188 %
Target27338.879564.3836 %320000500000008.03993.6751 %46.919465.6925 %
Difference-4-36.4529-2.0647 %-320000-50000000-8.0399-3.6751 %-44.4928-3.3737 %

Known prime factors (1 factor, 85.7 bits, 0.00017422% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
49199281635669993314840701431055832685.716646015531522544711
11 × 47 × 389 × 2731 × 27107 × 43391
2011-03-222710743391227,9010.07440.1465

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2011-03-22Rob SartainAppleCake2685.7161.6600.000%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2003-09-29Team Prime Ribv4_computers212590.001
2007-04-071997rj7v4_computers212630.020
2008-06-03ANONYMOUSManual testing212640.038
2008-07-12ComputerraRUv4_computers2642692.354


ECM factoring results:
No ECM results for M49199281


Lucas-Lehmer results:
No L-L results for M49199281


PRP results:
No PRP results for M49199281


CERT results:
No CERT results for M49199281


P-1 factor-bounds graph:
103
104
105
103
104
105
TF factor-bounds graph:
269
264
263
259
this exponent TF target: 73
TF double-checked to: 67
250
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Last modified: 2024-03-13T02:15:48+00:00