is 215806213-1
has 4,758,145 decimal digits
takes 8.643 GHz-days to do one L-L test
Last-known PrimeNet details:
0 L-L tests remaining
ResidueStatus
L-LE35FB8D390CD6BA0double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2630.101061.9048%300,0006,000,0000.48417.6859%0.585169.5906%6.5137%
PrimeNet2650.461663.0769%70,0002,200,0000.14754.3108%0.609167.3878%4.3108%
GPU722697.553265.2174%110,0002,800,0000.20343.1195%7.756668.3369%3.1195%
Difference-6-7.4522-3.3126%+190,000+3,200,000+0.2807+4.5663%-7.1715+1.2537%+1.2537%

Known prime factors (1 factor, 119.1 bits, 0.00075331% known):
Remaining cofactor is PRP status unknown

GHz-days
exponentfactordigitsbits*kmin B1min B2date foundmin. TFmin. P-1normal P-1
1580621369760232659047908943712953720906849736119.07022067345498585875359174570696
23 × 3 × 11 × 13 × 59 × 163 × 27793 × 44851 × 87403 × 6136621
87,4036,136,6212016-01-161.195e+100.33060.4951

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2002-06-09T00:00:00ANONYMOUSv4_computers235,000235,000---0.186--3.230%
2016-01-16T16:40:28ThaManual testing300,0006,000,0001236119.0700.48417.290.9687.686%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-01-14T00:00:00Net_Forcev4_computers?258--0.002--
2001-04-08T00:00:00Mike Curtisv4_computers?262--0.019--
2002-03-03T00:00:00Team Prime Ribv4_computers?265--0.236--
2013-09-19T08:36:00David CampeauManual testing265266--0.473--
2014-07-20T03:14:00NesowaManual testing266267--0.946--


ECM factoring results:
Exponent "15806213" not found


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2002-12-31T00:00:00ANONYMOUSv4_computersE35FB8D390CD6BA08.643
2006-08-25T00:00:00TheJudgerv4_computersE35FB8D390CD6BA08.643


PRP results:
Exponent "15806213" not found


P-1 factor-bounds graph:
B1 = 300,000, B2 = 6,000,000 (stage 2)
B1 = 300,000 (stage 1)
B1 = 235,000 (stage 1)
103
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107
TF factor-bounds graph:
267
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265
263
262
258
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260
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290
2100
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2120
Last modified: 2016-01-16T16:40:28+00:00