is 2 14005253 - 1
has 4216002 decimal digits
takes 6.214 GHz-days to do one PRP test
Last-known PrimeNet details:
0 L-L tests remaining
ResidueStatus
L-L6CEDDD9F8C106C75double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27134.135666.1972%30000060000000.39283.4166%34.528469.6137%6.5368%
PrimeNet2650.520963.0769%6000019000000.10314.0021%0.624067.0791%4.0021%
GPU722698.524465.2174%9000024000000.13892.8532%8.663368.0706%2.8532%
Difference+2+25.6112+0.9798%+210000+3600000+0.2539+0.5633%+25.8651+1.5431%+1.5431%

Known prime factors (1 factor, 77.9 bits, 0.00055626% known):
Remaining cofactor is PRP status unknown

GHz-days
exponentfactordigitsbits*kmin B1min B2date foundmin. TFmin. P-1normal P-1
140052532830763936150859228079612477.90610106079255229660
22 × 5 × 463321 × 1090613123
46332110906131232020-08-043,283.038.50971.397

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2002-03-03T00:00:00ANONYMOUSv4_computers200000200000---0.129--1.092%
2002-03-16T00:00:00ANONYMOUSv4_computers200000200000---0.129--1.092%
2017-03-23T13:27:48James Heinrichi7-92014500025375006---0.177--2.505%
2017-03-26T13:42:48ThaManual testing300000600000012---0.393--3.417%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2000-12-14T00:00:00ANONYMOUSv4_computers?256--0.001--
2001-01-08T00:00:00ANONYMOUSv4_computers?264--0.140--
2001-01-21T00:00:00ANONYMOUSv4_computers?265--0.267--
2014-07-22T14:07:00NesowaManual testing265266--0.534--
2015-08-18T06:23:00ThaManual testing266267--1.067--
2018-02-05T20:29:42ramgeisManual testing267268--2.134--
2018-02-05T20:29:42ramgeisManual testing268269--4.269--
2018-09-07T16:50:46mikrManual testing269270--8.537--
2020-04-27T20:48:57masserManual testing270271--17.07--


ECM factoring results:
ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0
50000500000010.675


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2002-03-24T00:00:00ANONYMOUSv4_computers66E3F2DB28B38E__6.214
2005-05-12T00:00:00ANONYMOUSv4_computers6CEDDD9F8C106C756.214


PRP results:
Exponent "14005253" not found


P-1 factor-bounds graph:
B1 = 300000, B2 = 6000000 (stage 2)
B1 = 300000 (stage 1)
B1 = 145000, B2 = 2537500 (stage 2)
B1 = 200000 (stage 1)
B1 = 145000 (stage 1)
104
105
106
104
105
106
107
108
109
1010
TF factor-bounds graph:
271
270
269
268
267
266
265
264
256
250
260
270
280
290
2100
Last modified: 2020-08-04T17:11:32+00:00