is 2 6444353 - 1
has 1939944 decimal digits
takes 1.208 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L6110993F8DF6B4B1double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2674.610865.6716%350004987500.01641.7830%4.627266.2837%0.6121%
PrimeNet2620.095362.9032%280006500000.01683.4845%0.112264.1959%1.2926%
GPU722662.291765.1515%4500010000000.02642.5755%2.318166.0490%0.8975%
Difference+1+2.3192+0.5201%-10000-501250-0.0100-0.7925%+2.3092+0.2347%+0.2347%

Known prime factors (1 factor, 64.5 bits, 0.00100035% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
6444353254857586421917457832064.4661977371401147
73757 × 26809271
2011-12-1373757268092711.00500.41590.7414

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2009-06-21T19:24:00Carsten Kossendeyleela35000498750---0.016--1.783%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-07-05T00:00:00ANONYMOUSv4_computers21262--0.095--


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)
1999-01-17T00:00:00ANONYMOUSv4_computers258A1D1452E60A__1.208
1999-12-08T00:00:00Will Wilkinsonv4_computers6110993F8DF6B4B11.208
2001-07-17T00:00:00ANONYMOUSv4_computers6110993F8DF6B4B11.208
2001-07-29T00:00:00ANONYMOUSv4_computers6110993F8DF6B4B11.208
2001-08-04T00:00:00ANONYMOUSv4_computers6110993F8DF6B4B11.208
2001-08-24T00:00:00ANONYMOUSv4_computers6110993F8DF6B4B11.208
2001-09-10T00:00:00ANONYMOUSv4_computers6110993F8DF6B4B11.208


PRP results:
dateuseridcompidcofactorsres64PRP
2017-12-17T12:41:08Oliver KruseGTX-1
25485758642191745783
C3B64A1DA339A4__no
2018-07-18T11:29:15kkmrkkblmbrbkc5.large
25485758642191745783
C3B64A1DA339A4__no


P-1 factor-bounds graph:
B1 = 35000, B2 = 498750 (P-1 stage 2)
B1 = 35000 (P-1 stage 1)
103
104
105
103
104
105
106
107
108
TF factor-bounds graph:
267
262
250
260
270
280
290
2100
Last modified: 2018-07-18T11:29:15+00:00