is 2 8374603 - 1
has 2521007 decimal digits
takes 2.187 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LC0485C2003435BC7double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2673.548165.6716%9500016862500.06883.1065%3.616966.7380%1.0664%
PrimeNet2640.425064.0625%340009000000.03073.1729%0.455865.2027%1.1402%
GPU722687.117366.1765%5000011000000.04062.1870%7.157966.9162%0.7397%
Difference-1-3.5692-0.5048%+45000+586250+0.0282+0.9195%-3.5410-0.1781%-0.1781%

Known prime factors (1 factor, 66.9 bits, 0.00079831% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
83746031334814887239384174492166.8557969421877308
22 × 607 × 3282298961
2013-05-2260732822989612.346067.707126.46

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2002-09-22T00:00:00ANONYMOUSv4_computers40000570000---0.026--1.996%
2012-08-23T16:24:00firejuggler950001686250---0.069--3.106%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-09-27T00:00:00ANONYMOUSv4_computers21261--0.037--
1998-09-27T00:00:00ANONYMOUSv4_computers21262--0.073--
1998-10-04T00:00:00ANONYMOUSv4_computers21263--0.191--
1999-12-30T00:00:00ANONYMOUSv4_computers21264--0.425--


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)
2000-02-01T00:00:00ANONYMOUSv4_computersC0485C2003435BC72.187
2002-09-29T00:00:00ANONYMOUSv4_computers92F58DF74F2D17__2.187
2003-02-09T00:00:00ANONYMOUSv4_computersC0485C2003435BC72.187
2003-10-08T00:00:00ANONYMOUSv4_computersC0485C2003435BC72.187


PRP results:
dateuseridcompidcofactorsres64PRP
2018-10-18T14:12:20ANONYMOUS
133481488723938417449
5FE65DBE9EF174__no
2020-05-10T01:32:53marssystemssystem03
133481488723938417449
5FE65DBE9EF174C4no


P-1 factor-bounds graph:
B1 = 95000, B2 = 1686250 (P-1 stage 2)
B1 = 95000 (P-1 stage 1)
B1 = 40000, B2 = 570000 (P-1 stage 2)
B1 = 40000 (P-1 stage 1)
101
102
103
104
105
101
102
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
267
264
263
262
261
250
260
270
280
290
2100
Last modified: 2020-05-10T01:32:53+00:00