is 21455569-1
has 438,170 decimal digits
takes 0.056 GHz-days to do one L-L test
Last-known PrimeNet details:
0 L-L tests remaining
ResidueStatus
L-LE82D7C08590FB791double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2631.096566.6667%2,000,00060,000,0000.285710.0434%1.382276.7101%14.2101%
PrimeNet2560.006662.5000%7,000120,0000.00072.9063%0.007365.4063%2.9063%
GPU722600.105565.0000%6,50090,0000.00061.3976%0.106166.3976%1.3976%
Difference+3+0.9910+1.6667%+1,993,500+59,910,000+0.2851+8.6458%+1.2760+10.3125%+10.3125%

Known prime factors (1 factor, 122.3 bits, 0.00840353% known):
Remaining cofactor is not a probable-prime

GHz-days
exponentfactordigitsbits*kmin B1min B2date foundmin. TFmin. P-1normal P-1
1455569663317925404264444238677774248276507137122.3192278551980030711166006825421015
5 × 29 × 53 × 823 × 37861 × 435647 × 755107 × 28925437
755,10728,925,4372015-02-119.961e+100.12680.1630

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-09-29T00:00:00Team Prime Ribv4_computers15,000243,750---0.002--1.550%
2010-08-27T11:32:00Rob_Deetwopc100,000200,000---0.006--2.049%
2010-08-28T15:09:00Rob_Deetwopc200,000300,000---0.011--2.483%
2010-08-29T13:31:00Rob_Deetwopc200,0001,000,000---0.013--3.668%
2010-08-30T12:44:00Rob_Deetwopc200,0002,000,000---0.017--4.368%
2010-08-31T11:24:00Rob_Deetwopc200,0003,000,000---0.020--4.784%
2010-09-01T11:42:00Rob_Deetwopc200,0004,000,000---0.023--5.082%
2010-09-02T11:39:00Rob_Deetwopc200,0005,000,000---0.026--5.314%
2014-11-17T02:17:00Jocelyn LaroucheManual testing244,095244,095---0.014--2.284%
2015-01-28T11:16:00Jocelyn LaroucheManual testing324,889324,889---0.018--2.576%
2015-01-30T21:42:00Jocelyn LaroucheManual testing357,377357,377---0.020--2.677%
2015-02-11T18:44:00alpertronManual testing2,000,00060,000,0001237122.3190.2860.1110.57110.043%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2003-07-21T00:00:00ANONYMOUSv4_computers?258--0.026--
2010-05-07T01:30:00For Researcha3_bu2260261--0.106--
2011-03-08T05:14:00GrunwalderGIMPManual testing21263--1.096--


ECM factoring results:
ECM Summary

B1B2factorcurvesGHz-days
50,0005,000,00025111.89


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-01-02T00:00:00ANONYMOUSv4_computersE82D7C08590FB7910.056


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-01T02:26:24Oliver KruseGTX-3
6633179254042644442386777742482765071
2EB9C777704836__no
2017-10-27T16:37:26kkmrkkblmbrbkc4.xlarge
6633179254042644442386777742482765071
2EB9C777704836__no


P-1 factor-bounds graph:
B1 = 2,000,000, B2 = 60,000,000 (stage 2)
B1 = 2,000,000 (stage 1)
B1 = 200,000, B2 = 5,000,000 (stage 2)
B1 = 200,000, B2 = 4,000,000 (stage 2)
B1 = 357,377 (stage 1)
B1 = 200,000, B2 = 3,000,000 (stage 2)
B1 = 324,889 (stage 1)
B1 = 200,000, B2 = 2,000,000 (stage 2)
B1 = 244,095 (stage 1)
B1 = 200,000, B2 = 1,000,000 (stage 2)
B1 = 200,000, B2 = 300,000 (stage 2)
B1 = 200,000 (stage 1)
B1 = 100,000, B2 = 200,000 (stage 2)
B1 = 100,000 (stage 1)
B1 = 15,000, B2 = 243,750 (stage 2)
B1 = 15,000 (stage 1)
103
104
105
106
107
103
104
105
106
107
108
TF factor-bounds graph:
263
261
258
250
260
270
280
290
2100
2110
2120
2130
Last modified: 2019-03-08T12:28:56+00:00