is 2 49557271 - 1
has 14918226 decimal digits
takes 90.786 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
Actual2692.409162.3188 %----2.409162.3188 %
Target27338.598764.3836 %320000500000008.03993.6786 %46.638665.6937 %
Difference-4-36.1896-2.0647 %-320000-50000000-8.0399-3.6786 %-44.2295-3.3749 %

Known prime factors (1 factor, 78.5 bits, 0.00015836% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
495572714214961804076035246785032478.4804252616940989381
19 × 37 × 79 × 1289 × 1669 × 35593
2010-07-251669355931,246.20.00930.0096

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2010-07-25Earl F GlynnHP-PavE2478.4801.7980.000%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2003-12-13Team Prime Ribv4_computers212590.001
2007-07-041997rj7v4_computers212630.020
2008-08-07precius1v4_computers212691.206


ECM factoring results:
No ECM results for M49557271


Lucas-Lehmer results:
No L-L results for M49557271


PRP results:
No PRP results for M49557271


CERT results:
No CERT results for M49557271


P-1 factor-bounds graph:
102
103
104
102
103
104
105
TF factor-bounds graph:
269
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