is 2 63077717 - 1
has 18988285 decimal digits
takes 148.174 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
Actual2670.471161.1940 %----0.471161.1940 %
Target27460.653264.8649 %4000006500000013.35073.7299 %74.003966.1754 %
Difference-7-60.1821-3.6708 %-400000-65000000-13.3507-3.7299 %-73.5329-4.9814 %

Known prime factors (1 factor, 67.1 bits, 0.00010630% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
630777171528967704290897032572167.0511211971340284
22 × 302992835071
2009-02-2743029928350710.914656,228105,019

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2009-02-27ahmeraliv4_computers2167.0514.6280.000%


Trial Factoring results:
575859606162636465666768697071727374
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2009-03-02ahmeraliv4_computers??
67.051
21
1999-11-17ANONYMOUSv4_computers212514.80000e-6
2003-07-21Gordon Spencev4_computers212590.001
2022-03-30LordJuliusManual testing21263
2009-02-14Wojciech Florekarmada22632640.031
2009-02-23BIGMATHCore22642650.059


ECM factoring results:
No ECM results for M63077717


Lucas-Lehmer results:
No L-L results for M63077717


PRP results:
No PRP results for M63077717


CERT results:
No CERT results for M63077717


P-1 factor-bounds graph:
100
101
100
101
102
103
104
105
106
107
108
109
1010
1011
1012
TF factor-bounds graph:
265
264
263
259
251
this exponent TF target: 74
TF double-checked to: 67
250
260
270
280
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Last modified: 2024-03-13T02:15:48+00:00