is 21546379-1
has 465,507 decimal digits
takes 0.069 GHz-days to do one L-L test
Last-known PrimeNet details:
0 L-L tests remaining
ResidueStatus
L-LCCE351C4356465FEdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2654.717967.6923%10,000,000200,000,0001.318111.2202%6.036078.9125%15.7546%
PrimeNet2570.012463.1579%6,500110,0000.00082.4194%0.013265.5772%2.4194%
GPU722610.198665.5738%6,50060,0000.00061.0484%0.199366.6222%1.0484%
Difference+4+4.5193+2.1185%+9,993,500+199,940,000+1.3175+10.1718%+5.8368+12.2904%+12.2904%

Known prime factors (1 factor, 130.0 bits, 0.00840632% known):
Remaining cofactor is not a probable-prime

GHz-days
exponentfactordigitsbits*kmin B1min B2date foundmin. TFmin. P-1normal P-1
1546379135506440638399494177557762698943829692140129.994438141104601134308528367763332740
22 × 5 × 67 × 75707 × 352909 × 360511 × 811351 × 41839177
811,35141,839,1772015-03-209.578e+100.19730.2757

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-09-29T00:00:00Team Prime Ribv4_computers20,000290,000---0.002--1.338%
2011-02-03T19:37:00James HeinrichWHS80,0001,340,000---0.010--2.801%
2013-11-21T16:16:00David Campeaui5-2500k945,00027,405,000---0.155--7.122%
2015-03-22T08:29:00VictordeHollanderManual testing10,000,000200,000,0001240129.9941.3180.1382.63611.220%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-10-18T00:00:00ANONYMOUSv4_computers?257--0.012--
2003-08-08T00:00:00ANONYMOUSv4_computers?258--0.025--
2010-04-27T12:40:00For Researcha3_bu2260261--0.099--
2010-06-02T19:48:00GrunwalderGIMPManual testing21263--1.032--
2015-02-13T00:56:00snme2pm1Manual testing263264--1.270--
2015-02-13T00:56:00snme2pm1Manual testing264265--2.416--


ECM factoring results:
ECM Summary

B1B2factorcurvesGHz-days
50,0005,000,00025114.03


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-10-25T00:00:00ANONYMOUSv4_computersCCE351C4356465FE0.069


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-30T15:24:21alpertronManual testing
1355064406383994941775577626989438296921
6835B5232CF219__no
2017-10-18T08:42:44Oliver KruseThreadripper
1355064406383994941775577626989438296921
6835B5232CF219__no


P-1 factor-bounds graph:
B1 = 10,000,000, B2 = 200,000,000 (stage 2)
B1 = 10,000,000 (stage 1)
B1 = 945,000, B2 = 27,405,000 (stage 2)
B1 = 945,000 (stage 1)
B1 = 80,000, B2 = 1,340,000 (stage 2)
B1 = 80,000 (stage 1)
B1 = 20,000, B2 = 290,000 (stage 2)
B1 = 20,000 (stage 1)
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109
TF factor-bounds graph:
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Last modified: 2019-07-26T09:11:03+00:00