is 21665611-1
has 501,399 decimal digits
takes 0.078 GHz-days to do one L-L test
Last-known PrimeNet details:
0 L-L tests remaining
ResidueStatus
L-L3EC4B6BECD3CB04Adouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2630.958266.6667%1,000,00040,000,0000.21329.1207%1.171575.7873%12.6294%
PrimeNet2570.011563.1579%7,000120,0000.00092.5682%0.012465.7261%2.5682%
GPU722610.184465.5738%7,00080,0000.00071.2061%0.185266.7798%1.2061%
Difference+2+0.7738+1.0929%+993,000+39,920,000+0.2125+7.9146%+0.9863+9.0075%+9.0075%

Known prime factors (1 factor, 79.6 bits, 0.00477635% known):
Remaining cofactor is not a probable-prime

GHz-days
exponentfactordigitsbits*kmin B1min B2date foundmin. TFmin. P-1normal P-1
16656118882723199380272235563212479.555266650592466676560
24 × 3 × 5 × 1259 × 97849 × 9018809
97,8499,018,8092012-02-25117,4190.03980.0626

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2012-02-25T07:05:00AxonManual testing100,000100,000---0.007--1.533%
2012-02-25T07:05:00AxonManual testing200,000200,000---0.014--2.137%
2012-02-25T07:06:00AxonManual testing300,000300,000---0.020--2.543%
2012-02-25T07:06:00AxonManual testing400,000400,000---0.027--2.855%
2012-02-25T07:06:00AxonManual testing500,000500,000---0.034--3.111%
2012-02-25T07:06:00AxonManual testing600,000600,000---0.041--3.328%
2012-02-25T07:06:00AxonManual testing700,000700,000---0.048--3.517%
2012-02-25T07:07:00AxonManual testing800,000800,000---0.055--3.686%
2012-02-25T07:07:00AxonManual testing900,000900,000---0.061--3.838%
2012-02-25T07:07:00AxonManual testing1,000,0001,000,000---0.068--3.976%
2012-02-25T07:08:00AxonManual testing1,000,0008,000,000---0.094--6.868%
2012-02-25T07:08:00AxonManual testing1,000,00024,000,000---0.154--8.406%
2012-02-25T07:08:00AxonManual testing1,000,00032,000,000---0.183--8.808%
2012-02-25T07:08:00AxonManual testing1,000,00040,000,000---0.213--9.121%
2016-03-17T19:18:06alpertronManual testing500,00015,000,00012---0.088--7.318%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-11-14T00:00:00bezaharv4_computers?257--0.012--
2010-04-28T04:27:00For Researchi4l_1260261--0.092--
2010-08-22T04:21:00GrunwalderGIMPManual testing21263--0.958--


ECM factoring results:
ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0
50,0005,000,00025114.89


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-11-14T00:00:00bezaharv4_computers3EC4B6BECD3CB04A0.078


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-02T21:32:40Oliver KruseGTX-0
888272319938027223556321
CE2D06D8D6A1CD__no
2017-11-02T20:57:56kkmrkkblmbrbkc4.xlarge
888272319938027223556321
CE2D06D8D6A1CD__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 = 8,000,000 (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)
103
104
105
106
103
104
105
106
107
108
TF factor-bounds graph:
263
261
257
250
260
270
280
290
2100
Last modified: 2019-12-02T14:39:21+00:00