is 21635889-1
has 492,452 decimal digits
takes 0.073 GHz-days to do one L-L test
Last-known PrimeNet details:
0 L-L tests remaining
ResidueStatus
L-L0208C33516C39F89double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2630.975666.6667%1,000,00040,000,0000.20249.1039%1.178075.7706%12.6127%
PrimeNet2570.011763.1579%7,000120,0000.00092.5592%0.012665.7171%2.5592%
GPU722610.187865.5738%6,50070,0000.00061.1192%0.188466.6930%1.1192%
Difference+2+0.7879+1.0929%+993,500+39,930,000+0.2017+7.9847%+0.9896+9.0776%+9.0776%

Known prime factors (1 factor, 66.5 bits, 0.00406718% known):
Remaining cofactor is not a probable-prime

GHz-days
exponentfactordigitsbits*kmin B1min B2date foundmin. TFmin. P-1normal P-1
16358891068813992329770674412166.53532667680763480
23 × 3 × 5 × 72 × 53 × 103 × 1017719
1031,017,7192012-02-1210.6890.00360.0067

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2012-02-12T14:09:00AxonManual testing100,000100,000---0.006--1.528%
2012-02-12T14:09:00AxonManual testing200,000200,000---0.013--2.131%
2012-02-12T14:09:00AxonManual testing300,000300,000---0.019--2.537%
2012-02-12T14:09:00AxonManual testing400,000400,000---0.026--2.848%
2012-02-12T14:09:00AxonManual testing500,000500,000---0.032--3.103%
2012-02-12T14:09:00AxonManual testing600,000600,000---0.039--3.320%
2012-02-12T14:10:00AxonManual testing700,000700,000---0.045--3.509%
2012-02-12T14:10:00AxonManual testing800,000800,000---0.052--3.677%
2012-02-12T14:10:00AxonManual testing900,000900,000---0.058--3.829%
2012-02-12T14:10:00AxonManual testing1,000,0001,000,000---0.065--3.967%
2012-02-12T14:10:00AxonManual testing1,000,00016,000,000---0.118--7.823%
2012-02-12T14:11:00AxonManual testing1,000,00024,000,000---0.146--8.390%
2012-02-12T14:11:00AxonManual testing1,000,00032,000,000---0.174--8.792%
2012-02-12T14:11:00AxonManual testing1,000,00040,000,000---0.202--9.104%
2016-03-17T19:17:41alpertronManual testing500,00015,000,00012---0.084--7.303%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-11-07T00:00:00Olli Heikkiläv4_computers?257--0.012--
1999-01-02T00:00:00Olli Heikkiläv4_computers?257--0.012--
2003-06-17T00:00:00ANONYMOUSv4_computers?258--0.023--
2010-05-02T12:03:00For Researchi4l_1260261--0.094--
2010-09-26T01:51:00GrunwalderGIMPManual testing21263--0.976--


ECM factoring results:
ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0
50,0005,000,00025114.10


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-12-21T00:00:00Olli Heikkiläv4_computers0208C33516C39F890.073
1999-01-02T00:00:00Olli Heikkiläv4_computers0208C33516C39F890.073


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-02T16:08:54Oliver KruseGTX-2
106881399232977067441
1453CC4D14975C__no
2017-11-01T23:48:49kkmrkkblmbrbkc4.xlarge
106881399232977067441
1453CC4D14975C__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)
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: 2019-11-18T17:50:27+00:00