is 2 4435513 - 1
has 1335223 decimal digits
takes 0.553 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L542D56D945DF4928double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2676.699165.6716%200001450000.00480.9773%6.703966.0071%0.3355%
PrimeNet2610.069362.2951%180003600000.00662.9416%0.075963.4042%1.1091%
GPU722651.644864.6154%260005000000.00942.0347%1.654265.3354%0.7200%
Difference+2+5.0543+1.0563%-6000-355000-0.0045-1.0574%+5.0497+0.6718%+0.6718%

Known prime factors (1 factor, 62.4 bits, 0.00140687% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
443551360931717675160448011962.402686862124800
28 × 3 × 52 × 17 × 2104357
2010-01-0325621043570.26790.02080.0387

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2001-01-08T00:00:00ANONYMOUSv4_computers20000145000---0.005--0.977%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2002-04-28T00:00:00ANONYMOUSv4_computers21261--0.069--


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)
1998-03-09T00:00:00S00030v4_computers542D56D945DF49280.553
1999-11-24T00:00:00ANONYMOUSv4_computersA04C698A5B4851__0.553


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-20T19:18:56kkmrkkblmbrbkManual testing
6093171767516044801
3AF8B9AC1D1E66__no
2018-02-13T03:20:39Oliver KruseGTX-3
6093171767516044801
3AF8B9AC1D1E66__no


P-1 factor-bounds graph:
B1 = 20000, B2 = 145000 (P-1 stage 2)
B1 = 20000 (P-1 stage 1)
101
102
103
104
105
101
102
103
104
105
106
107
TF factor-bounds graph:
267
261
250
260
270
280
290
2100
Last modified: 2018-02-13T03:20:39+00:00