is 2 2465179 - 1
has 742093 decimal digits
takes 0.171 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L01E80B34ACC000B1double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26712.053567.1642%2000000600000000.51907.6362%12.572469.6716%2.5074%
PrimeNet2590.031262.7119%100001800000.00192.5312%0.033163.6557%0.9438%
GPU722630.647465.0794%100001600000.00181.3350%0.649365.5456%0.4662%
Difference+4+11.4060+2.0848%+1990000+59840000+0.5171+6.3012%+11.9232+4.1260%+4.1260%

Known prime factors (1 factor, 63.0 bits, 0.00255592% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
246517992742822065746798071963.0081881056549357
107 × 17579967751
2010-03-18107175799677510.857296.330179.92

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-10-14T00:00:00ANONYMOUSv4_computers2048204800---0.001--0.290%
2003-10-31T00:00:00Team Prime Ribv4_computers15000232500---0.003--0.922%
2018-09-28T17:01:19alpertronManual testing20000006000000012---0.519--7.636%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-05-02T00:00:00ANONYMOUSv4_computers21259--0.031--
1999-05-16T00:00:00ANONYMOUSv4_computers21259--0.031--
2022-03-10T05:52:59LordJuliusManual testing21260--0.062--
2009-01-15T17:18:00Sturle Sundegorro.ifi260261--0.062--


ECM factoring results:

Old Calculation Method

Total ECM effort:0.275 GHz-days
Estimated T-Level:0.150
DigitsB1CurvesCompleteFacMiss
20110003 / 1000.03097.030%
25500003 / 2800.01198.932%

New Calculation Method

Total ECM effort:0.275 GHz-days
Estimated T-Level:0.150
DigitsB1CompleteFacMiss
20110000.11589.102%
25500000.01198.938%


ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0
50000500000030.275


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-05-02T00:00:00ANONYMOUSv4_computers01E80B34ACC000B10.171
1999-05-16T00:00:00ANONYMOUSv4_computers01E80B34ACC000B10.171


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-13T22:12:06Oliver KruseGTX-1F623FB933E5069__no
2017-11-30T06:23:05Yizhe Huangvm
9274282206574679807
F623FB933E5069__no


P-1 factor-bounds graph:
B1 = 2000000, B2 = 60000000 (P-1 stage 2)
B1 = 2000000 (P-1 stage 1)
B1 = 15000, B2 = 232500 (P-1 stage 2)
B1 = 15000 (P-1 stage 1)
B1 = 2048, B2 = 204800 (P-1 stage 2)
B1 = 2048 (P-1 stage 1)
101
102
103
104
105
106
107
101
102
103
104
105
106
107
108
109
1010
1011
TF factor-bounds graph:
267
261
260
259
250
260
270
280
290
2100
Last modified: 2022-03-10T05:52:59+00:00