is 2 4580791 - 1
has 1378956 decimal digits
takes 0.603 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L75CDF7F054E2B1ACdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2676.486665.6716%----6.486665.6716%0.0000%
PrimeNet2610.067162.2951%190004000000.00763.0736%0.074663.4540%1.1589%
GPU722651.592764.6154%280005500000.01082.1372%1.603465.3716%0.7562%
Difference+2+4.8940+1.0563%-28000-550000-0.0108-2.1372%+4.8832+0.3000%+0.3000%

Known prime factors (1 factor, 65.4 bits, 0.00142744% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
4580791482855645707234350232065.3885270439599921
29 × 461 × 394228409
2010-02-074613942284091.90384.10077.6588

P-1 results:
No P-1 results for M4580791


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1997-12-09T00:00:00ANONYMOUSv4_computers21260--0.034--
2001-11-24T00:00:00ANONYMOUSv4_computers21260--0.034--
2002-08-31T00:00:00ANONYMOUSv4_computers21260--0.034--


ECM factoring results:

Old Calculation Method

Total ECM effort:0.000 GHz-days
DigitsB1CurvesCompleteFacMiss

New Calculation Method

Total ECM effort:0.000 GHz-days
DigitsB1CompleteFacMiss


ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-03-17T00:00:00Senftv4_computers75CDF7F054E2B1AC0.603


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-20T06:35:13kkmrkkblmbrbkManual testing
48285564570723435023
9711179CEC9DFD__no
2018-02-24T23:52:11Oliver KruseGTX-6
48285564570723435023
9711179CEC9DFD__no


P-1 factor-bounds graph:
101
102
103
101
102
103
104
105
106
107
108
109
TF factor-bounds graph:
267
260
250
260
270
280
290
2100
Last modified: 2018-02-24T23:52:11+00:00