is 2 47586719 - 1
has 14325030 decimal digits
takes 82.616 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
Actual2692.508862.3188 %7450007450001.87542.9737 %4.384363.4394 %
Target27220.096763.8889 %340000550000008.35274.1607 %28.449365.3913 %
Difference-3-17.5878-1.5700 %+405000-54255000-6.4772-1.1870 %-24.0651-1.9520 %

Known prime factors (1 factor, 69.9 bits, 0.00014691% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
4758671911094888275137995780472269.91011657547009217
101 × 23227 × 4969271
2011-12-242322749692713.57310.73681.2729

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2010-08-16JB1500Quad745000745000--1.8752.139%
2011-12-24Craig MeyersManual testing2269.9102.0140.000%


Trial Factoring results:
57585960616263646566676869707172
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2008-04-07James Hintzv4_computers212691.256


ECM factoring results:
No ECM results for M47586719


Lucas-Lehmer results:
No L-L results for M47586719


PRP results:
No PRP results for M47586719


CERT results:
No CERT results for M47586719


P-1 factor-bounds graph:
B1 = 745000 (P-1 stage 1)
103
104
105
106
103
104
105
106
107
TF factor-bounds graph:
269
this exponent TF target: 72
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00