is 2 5972959 - 1
has 1798040 decimal digits
takes 1.059 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LCE66B8F429650A3Bdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2674.974765.6716%7000011550000.03322.5496%5.007966.5469%0.8752%
PrimeNet2620.102962.9032%260006000000.01473.3272%0.117664.1375%1.2343%
GPU722662.472565.1515%400008000000.02092.3460%2.493565.9691%0.8176%
Difference+1+2.5022+0.5201%+30000+355000+0.0123+0.2036%+2.5144+0.5778%+0.5778%

Known prime factors (1 factor, 64.6 bits, 0.00108170% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
5972959281470572924309361132064.6102356207140584
23 × 11 × 19 × 457 × 3083621
2011-07-0245730836210.95930.04330.0806

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2000-10-28T00:00:00ANONYMOUSv4_computers25000212500---0.009--1.251%
2010-12-09T16:08:00Squeeky_SquirrelP4_2600700001155000---0.033--2.550%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-05-23T00:00:00Thav4_computers21262--0.103--


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)
1998-10-25T00:00:00ANONYMOUSv4_computersCE66B8F429650A3B1.059
2000-12-21T00:00:00ANONYMOUSv4_computersCE66B8F429650A3B1.059


PRP results:
dateuseridcompidcofactorsres64PRP
2017-12-12T21:52:27treborDesktop
28147057292430936113
1F97A0DB9AEF81__no
2018-04-26T23:03:52kkmrkkblmbrbkc5.xlarge
28147057292430936113
1F97A0DB9AEF81__no


P-1 factor-bounds graph:
B1 = 70000, B2 = 1155000 (P-1 stage 2)
B1 = 70000 (P-1 stage 1)
B1 = 25000, B2 = 212500 (P-1 stage 2)
B1 = 25000 (P-1 stage 1)
101
102
103
104
105
101
102
103
104
105
106
107
TF factor-bounds graph:
267
262
250
260
270
280
290
2100
Last modified: 2018-04-26T23:03:52+00:00