is 2 6305939 - 1
has 1898277 decimal digits
takes 1.118 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LDE210238E7BAC0B6double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2689.452266.1765%16000034800000.08763.4182%9.539867.3326%1.1562%
PrimeNet2620.097462.9032%260006000000.01473.3568%0.112164.1485%1.2453%
GPU722662.342065.1515%4500010000000.02492.5665%2.366966.0459%0.8944%
Difference+2+7.1102+1.0250%+115000+2480000+0.0627+0.8518%+7.1729+1.2867%+1.2867%

Known prime factors (1 factor, 63.1 bits, 0.00100012% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
630593996603353886703049291963.067765971204976
24 × 33 × 1773081493
2014-08-172717730814930.287924.82446.365

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2001-03-17T00:00:00ANONYMOUSv4_computers2500025000---0.006--0.390%
2001-06-17T00:00:00ANONYMOUSv4_computers2500081250---0.007--0.761%
2011-06-12T07:37:00markrtiny1600003480000---0.088--3.418%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-06-28T00:00:00ANONYMOUSv4_computers21262--0.097--
2022-08-10T07:41:23LordJuliusManual testing21263--0.253--
2014-08-17T11:19:00NesowaManual testing26326463.067190.0352.2720.071
2022-08-10T07:41:23LordJuliusManual testing26326463.067190.0352.2720.071
2022-08-10T07:41:23LordJuliusManual testing264265--0.593--
2022-08-10T07:41:23LordJuliusManual testing265266--1.185--
2022-08-10T07:41:23LordJuliusManual testing266267--2.370--
2022-08-10T19:28:49LordJuliusManual testing267268--4.740--


ECM factoring results:

Old Calculation Method

Total ECM effort:0.808 GHz-days
Estimated T-Level:0.150
DigitsB1CurvesCompleteFacMiss
20110003 / 1000.03097.030%
25500003 / 2800.01198.932%

New Calculation Method

Total ECM effort:0.808 GHz-days
Estimated T-Level:0.150
DigitsB1CompleteFacMiss
20110000.11589.102%
25500000.01198.938%


ECM Summary

B1B2factorcurvesGHz-days
50000500000030.808


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-01-02T00:00:00ANONYMOUSv4_computersDE210238E7BAC0B61.118
2001-07-17T00:00:00ANONYMOUSv4_computersDE210238E7BAC0B61.118


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-24T16:44:22kkmrkkblmbrbkc4.xlarge
9660335388670304929
720879D38CDF88__no
2018-09-26T19:02:28ANONYMOUS
9660335388670304929
720879D38CDF88__no


P-1 factor-bounds graph:
B1 = 160000, B2 = 3480000 (P-1 stage 2)
B1 = 160000 (P-1 stage 1)
B1 = 25000, B2 = 81250 (P-1 stage 2)
B1 = 25000 (P-1 stage 1)
100
101
102
103
104
105
106
100
101
102
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
268
267
266
265
264
263
262
250
260
270
280
290
2100
Last modified: 2022-08-10T19:28:49+00:00