is 2 48728039 - 1
has 14668602 decimal digits
takes 84.597 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
Actual2692.450162.3188 %----2.450162.3188 %
Target27219.625963.8889 %340000550000008.35274.1732 %27.978665.3959 %
Difference-3-17.1759-1.5700 %-340000-55000000-8.3527-4.1732 %-25.5286-3.0770 %

Known prime factors (1 factor, 69.4 bits, 0.00014251% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
487280398031159682306401539832169.4448240799185769
3 × 31 × 87253 × 1015561
2010-10-118725310155613.63390.34700.4470

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2010-10-11Macavity2169.4443.0340.000%


Trial Factoring results:
57585960616263646566676869707172
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2003-06-09Thomas Mullenv4_computers212590.001
2008-06-13ANONYMOUSv4_computers212691.227


ECM factoring results:
No ECM results for M48728039


Lucas-Lehmer results:
No L-L results for M48728039


PRP results:
No PRP results for M48728039


CERT results:
No CERT results for M48728039


P-1 factor-bounds graph:
103
104
105
103
104
105
106
107
TF factor-bounds graph:
269
259
this exponent TF target: 72
TF double-checked to: 67
250
260
270
280
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Last modified: 2024-03-13T02:15:48+00:00