is 215551111-1
has 4,681,351 decimal digits
takes 7.799 GHz-days to do one L-L test
Last-known PrimeNet details:
0 L-L tests remaining
ResidueStatus
L-LCAEE2E2F1463E6A5double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2697.677165.2174%1,500,00030,000,0002.22006.7920%9.897172.0094%8.9325%
PrimeNet2650.469163.0769%70,0002,200,0000.13534.3008%0.604467.3778%4.3008%
GPU722697.677165.2174%110,0002,800,0000.18663.1122%7.863668.3296%3.1122%
Difference---+1,390,000+27,200,000+2.0334+3.6798%+2.0334+3.6798%+3.6798%

Known prime factors (1 factor, 126.2 bits, 0.00081163% known):
Remaining cofactor is not a probable-prime

GHz-days
exponentfactordigitsbits*kmin B1min B2date foundmin. TFmin. P-1normal P-1
155511119891940808753768676686494346604349115338126.2183180461128710922543311051649816
23 × 19 × 532 × 113 × 167 × 211 × 95027 × 1494253 × 13174867
1,494,25313,174,8672020-07-269.020e+91.54942.2115

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2004-09-16T00:00:00James Heinrichv4_computers90,0001,665,000---0.128--2.664%
2004-10-03T00:00:00James Heinrichv4_computers90,0001,665,000---0.128--2.664%
2004-10-18T00:00:00James Heinrichv4_computers90,0001,665,000---0.128--2.664%
2004-11-22T00:00:00James Heinrichv4_computers90,0001,665,000---0.128--2.664%
2006-09-04T00:00:00James Heinrichv4_computers90,0001,665,000---0.128--2.664%
2020-07-26T06:06:31ThaZ-1701,500,00030,000,0001238126.2182.22015.604.4406.792%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-01-21T00:00:00Net_Forcev4_computers?258--0.002--
2001-02-18T00:00:00Net_Forcev4_computers?259--0.002--
2001-03-11T00:00:00ANONYMOUSv4_computers?265--0.240--
2016-03-16T02:28:47Mark RoseManual testing265266--0.481--
2013-12-28T00:12:00NesowaManual testing266267--0.961--
2018-02-08T10:42:05ramgeisManual testing267268--1.922--
2018-02-08T10:42:05ramgeisManual testing268269--3.844--


ECM factoring results:
ECM Summary

B1B2factorcurvesGHz-days
50,0005,000,00010.763


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2002-10-26T00:00:00ANONYMOUSv4_computersCAEE2E2F1463E6A57.799
2006-07-25T00:00:00penguin22v4_computersCAEE2E2F1463E6A57.799


PRP results:
dateuseridcompidcofactorsres64PRP
2020-08-04T06:03:28CrypticCluecruncher
98919408087537686766864943466043491153
844FC7B6B822119Eno
2020-09-19T13:01:01JaytholomewJaytholomew
98919408087537686766864943466043491153
844FC7B6B822119Eno


P-1 factor-bounds graph:
B1 = 1,500,000, B2 = 30,000,000 (stage 2)
B1 = 1,500,000 (stage 1)
B1 = 90,000, B2 = 1,665,000 (stage 2)
B1 = 90,000 (stage 1)
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108
TF factor-bounds graph:
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Last modified: 2020-09-19T13:01:01+00:00