is 2 49784621 - 1
has 14986665 decimal digits
takes 91.203 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
Actual2719.602963.3803 %----9.602963.3803 %
Target27338.422464.3836 %320000500000008.03993.6808 %46.462365.6945 %
Difference-2-28.8195-1.0033 %-320000-50000000-8.0399-3.6808 %-36.8594-2.3142 %

Known prime factors (1 factor, 73.9 bits, 0.00014846% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
49784621177549081777135147112872373.911178317197370183
3 × 4261 × 19541 × 713861
2011-12-081954171386160.4050.15240.1930

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2011-12-08Sid & AndyEmperor_Zurg2373.9112.7020.000%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2008-09-23S485122v4_computers212691.201
2011-11-20BdotManual testing2692702.402
2011-11-28Kevin JagetManual testing2702714.803


ECM factoring results:
No ECM results for M49784621


Lucas-Lehmer results:
No L-L results for M49784621


PRP results:
No PRP results for M49784621


CERT results:
No CERT results for M49784621


P-1 factor-bounds graph:
103
104
105
103
104
105
106
TF factor-bounds graph:
271
270
269
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