is 2 47255059 - 1
has 14225191 decimal digits
takes 82.040 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
Actual2681.261361.7647 %----1.261361.7647 %
Target27220.237763.8889 %340000550000008.35274.1570 %28.590465.3900 %
Difference-4-18.9764-2.1242 %-340000-55000000-8.3527-4.1570 %-27.3290-3.6253 %

Known prime factors (1 factor, 78.9 bits, 0.00016701% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
472550595720455929978288338729932478.9206052744458512144
24 × 67 × 199 × 12391 × 2289803
2009-09-081239122898032,334.10.34350.5866

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2009-09-08KYOJI_KAMEI2478.9203.5600.000%


Trial Factoring results:
57585960616263646566676869707172
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2008-03-11Team Prime Ribv4_computers212680.633


ECM factoring results:
No ECM results for M47255059


Lucas-Lehmer results:
No L-L results for M47255059


PRP results:
No PRP results for M47255059


CERT results:
No CERT results for M47255059


P-1 factor-bounds graph:
103
104
105
103
104
105
106
107
TF factor-bounds graph:
268
this exponent TF target: 72
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00