is 21652543-1
has 497,466 decimal digits
takes 0.078 GHz-days to do one L-L test
Last-known PrimeNet details:
0 L-L tests remaining
ResidueStatus
L-L95EAAD28B901553Bdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2630.965866.6667%1,000,00040,000,0000.21329.1133%1.179075.7800%12.6221%
PrimeNet2570.011663.1579%7,000120,0000.00092.5642%0.012565.7221%2.5642%
GPU722610.185965.5738%7,00070,0000.00071.1515%0.186666.7252%1.1515%
Difference+2+0.7799+1.0929%+993,000+39,930,000+0.2125+7.9619%+0.9924+9.0548%+9.0548%

Known prime factors (1 factor, 70.7 bits, 0.00427843% known):
Remaining cofactor is not a probable-prime

GHz-days
exponentfactordigitsbits*kmin B1min B2date foundmin. TFmin. P-1normal P-1
165254319216760365731259945932270.703581429964779472
24 × 3 × 23 × 137 × 3491 × 1101179
3,4911,101,1792012-02-14167.520.00430.0076

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2012-02-14T09:06:00AxonManual testing100,000100,000---0.007--1.531%
2012-02-14T09:07:00AxonManual testing200,000200,000---0.014--2.134%
2012-02-14T09:07:00AxonManual testing300,000300,000---0.020--2.540%
2012-02-14T09:08:00AxonManual testing400,000400,000---0.027--2.852%
2012-02-14T09:08:00AxonManual testing500,000500,000---0.034--3.107%
2012-02-14T09:08:00AxonManual testing600,000600,000---0.041--3.324%
2012-02-14T09:09:00AxonManual testing700,000700,000---0.048--3.514%
2012-02-14T09:09:00AxonManual testing800,000800,000---0.055--3.682%
2012-02-14T09:09:00AxonManual testing900,000900,000---0.061--3.834%
2012-02-14T09:09:00AxonManual testing1,000,0001,000,000---0.068--3.972%
2012-02-14T09:09:00AxonManual testing1,000,00016,000,000---0.124--7.831%
2012-02-14T09:09:00AxonManual testing1,000,00024,000,000---0.154--8.399%
2012-02-14T09:09:00AxonManual testing1,000,00032,000,000---0.183--8.801%
2012-02-14T09:10:00AxonManual testing1,000,00040,000,000---0.213--9.113%
2016-03-17T19:17:55alpertronManual testing500,00015,000,00012---0.088--7.312%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-11-07T00:00:00ANONYMOUSv4_computers?257--0.012--
2003-05-19T00:00:00ANONYMOUSv4_computers?258--0.023--
2010-04-28T12:20:00For Researchm1_tt260261--0.093--
2010-08-13T02:23:00GrunwalderGIMPManual testing21263--0.966--


ECM factoring results:
ECM Summary

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


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1997-11-25T00:00:00ANONYMOUSv4_computers95EAAD28B901553B0.078
1997-12-04T00:00:00ANONYMOUSv4_computers95EAAD28B901553B0.078
1997-12-21T00:00:00ANONYMOUSv4_computers95EAAD28B901553B0.078
1998-02-01T00:00:00ANONYMOUSv4_computers95EAAD28B901553B0.078
1998-12-06T00:00:00ANONYMOUSv4_computers95EAAD28B901553B0.078


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-02T18:57:51Oliver KruseGTX-0
1921676036573125994593
95D4C6D05CD48E__no
2017-11-02T09:35:55Chang Chia-Tchehomura
1921676036573125994593
95D4C6D05CD48E__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 = 1,000,000, B2 = 16,000,000 (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)
102
103
104
105
106
102
103
104
105
106
107
108
TF factor-bounds graph:
263
261
258
257
250
260
270
280
290
2100
Last modified: 2019-12-09T17:15:29+00:00