is 2 47555671 - 1
has 14315684 decimal digits
takes 82.562 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
Actual2705.024762.8571 %----5.024762.8571 %
Target27220.109863.8889 %340000550000008.35274.1603 %28.462465.3912 %
Difference-2-15.0851-1.0317 %-340000-55000000-8.3527-4.1603 %-23.4378-2.5341 %

Known prime factors (1 factor, 92.1 bits, 0.00019359% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
4755567151659122112747316609277467672892.06154314365696519471473
3 × 7 × 41 × 269 × 3307 × 6737 × 10525883
2009-12-0267371052588341,509,9911.45972.6963

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2009-12-02enricocasa2892.0612.9670.000%


Trial Factoring results:
57585960616263646566676869707172
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2008-03-22binarydigitsv4_computers212702.514


ECM factoring results:
No ECM results for M47555671


Lucas-Lehmer results:
No L-L results for M47555671


PRP results:
No PRP results for M47555671


CERT results:
No CERT results for M47555671


P-1 factor-bounds graph:
102
103
104
102
103
104
105
106
107
108
TF factor-bounds graph:
270
this exponent TF target: 72
TF double-checked to: 67
250
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Last modified: 2024-03-13T02:15:48+00:00