is 21658291-1
has 499,196 decimal digits
takes 0.078 GHz-days to do one L-L test
Last-known PrimeNet details:
0 L-L tests remaining
ResidueStatus
L-L89A6A382A4181290double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2630.962466.6667%1,000,00040,000,0000.21329.1166%1.175775.7832%12.6253%
PrimeNet2570.011663.1579%7,000120,0000.00092.5660%0.012565.7238%2.5660%
GPU722610.185265.5738%7,00070,0000.00071.1523%0.186066.7261%1.1523%
Difference+2+0.7772+1.0929%+993,000+39,930,000+0.2125+7.9642%+0.9897+9.0571%+9.0571%

Known prime factors (1 factor, 70.3 bits, 0.00423946% known):
Remaining cofactor is not a probable-prime

GHz-days
exponentfactordigitsbits*kmin B1min B2date foundmin. TFmin. P-1normal P-1
165829114561190240450849269512270.303439042069228225
52 × 29 × 107 × 827 × 6843509
8276,843,5092012-02-15172.970.02550.0475

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2012-02-15T09:11:00AxonManual testing100,000100,000---0.007--1.532%
2012-02-15T09:11:00AxonManual testing200,000200,000---0.014--2.135%
2012-02-15T09:11:00AxonManual testing300,000300,000---0.020--2.542%
2012-02-15T09:11:00AxonManual testing400,000400,000---0.027--2.854%
2012-02-15T09:11:00AxonManual testing500,000500,000---0.034--3.109%
2012-02-15T09:11:00AxonManual testing600,000600,000---0.041--3.326%
2012-02-15T09:11:00AxonManual testing700,000700,000---0.048--3.515%
2012-02-15T09:12:00AxonManual testing800,000800,000---0.055--3.684%
2012-02-15T09:12:00AxonManual testing900,000900,000---0.061--3.835%
2012-02-15T09:12:00AxonManual testing1,000,0001,000,000---0.068--3.974%
2012-02-15T09:12:00AxonManual testing1,000,00024,000,000---0.154--8.402%
2012-02-15T09:12:00AxonManual testing1,000,00032,000,000---0.183--8.804%
2012-02-15T09:12:00AxonManual testing1,000,00040,000,000---0.213--9.117%
2016-03-17T19:18:01alpertronManual testing500,00015,000,00012---0.088--7.315%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-11-14T00:00:00ANONYMOUSv4_computers?257--0.012--
2003-04-27T00:00:00ANONYMOUSv4_computers?258--0.023--
2010-04-29T09:20:00For Researchm1_tt260261--0.093--
2010-08-13T02:23:00GrunwalderGIMPManual testing21263--0.962--


ECM factoring results:
ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0
50,0005,000,00025114.88


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-12-13T00:00:00ANONYMOUSv4_computers89A6A382A41812900.078


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-02T20:05:59Oliver KruseGTX-0
1456119024045084926951
A3A59F79F9F655__no
2017-11-02T18:46:52kkmrkkblmbrbkold
1456119024045084926951
A3A59F79F9F655__no


P-1 factor-bounds graph:
B1 = 1,000,000, B2 = 40,000,000 (stage 2)
B1 = 1,000,000, B2 = 32,000,000 (stage 2)
B1 = 1,000,000, B2 = 24,000,000 (stage 2)
B1 = 500,000, B2 = 15,000,000 (stage 2)
B1 = 1,000,000 (stage 1)
B1 = 900,000 (stage 1)
B1 = 800,000 (stage 1)
B1 = 700,000 (stage 1)
B1 = 600,000 (stage 1)
B1 = 500,000 (stage 1)
B1 = 400,000 (stage 1)
B1 = 300,000 (stage 1)
B1 = 200,000 (stage 1)
B1 = 100,000 (stage 1)
101
102
103
104
105
106
101
102
103
104
105
106
107
108
TF factor-bounds graph:
263
261
258
257
250
260
270
280
290
2100
Last modified: 2019-11-25T15:14:07+00:00