is 2 2358779 - 1
has 710064 decimal digits
takes 0.159 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L15BAE27D35A89163double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26712.597267.1642%2000000600000000.50557.6017%13.102669.6603%2.4961%
PrimeNet2580.016362.0690%110002000000.00213.0507%0.018463.2261%1.1572%
GPU722620.260564.5161%130002200000.00241.8368%0.262865.1679%0.6518%
Difference+5+12.3367+2.6481%+1987000+59780000+0.5031+5.7649%+12.8398+4.4924%+4.4924%

Known prime factors (1 factor, 73.6 bits, 0.00312046% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
2358779143628966260404139826072373.6053044561746997157
3 × 17 × 1135613 × 52568339
2015-06-131135613525683391,284.40.38570.5240

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-09-21T00:00:00ANONYMOUSv4_computers2048204800---0.001--0.286%
2010-11-03T21:25:00Jocelyn LaroucheManual testing2000020000---0.002--0.310%
2010-12-22T11:47:00Oscar Östlin7501175011---0.007--0.791%
2011-01-23T11:57:00Oscar Östlin900001822500---0.018--2.590%
2014-08-07T10:52:00Jocelyn LaroucheManual testing117211117211---0.011--1.026%
2014-10-22T23:53:00Jocelyn LaroucheManual testing144422144422---0.014--1.150%
2018-04-27T12:00:19alpertronManual testing20000006000000012-
skipped known factor: 14362896626040413982607
--0.505--7.602%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2009-01-17T07:30:00Sturle Sundekraus.ifi260261--0.065--
2012-05-30T06:42:00Sebastian HornbostelManual testing261262--0.130--
2013-12-04T21:14:00Jerry HallettManual testing262263--0.416--
2015-03-06T11:15:00VictordeHollanderManual testing263264--0.832--
2015-03-06T11:15:00VictordeHollanderManual testing264265--1.584--


ECM factoring results:

Old Calculation Method

Total ECM effort:1.332 GHz-days
Estimated T-Level:0.750
DigitsB1CurvesCompleteFacMiss
201100015 / 1000.15086.006%
255000015 / 2800.05494.775%

New Calculation Method

Total ECM effort:1.332 GHz-days
Estimated T-Level:0.750
DigitsB1CompleteFacMiss
20110000.48461.639%
25500000.04495.721%
302500000.00399.731%


ECM Summary

B1B2factorcurvesGHz-days
500005000000121.066
50000500000030.266


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-03-15T00:00:00ANONYMOUSv4_computers15BAE27D35A891630.159


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-12T13:06:58Oliver KruseGTX-1406BE8367386F6__no
2017-11-24T15:27:16storm5510HP-Z220-CMT
14362896626040413982607
406BE8367386F6__no


P-1 factor-bounds graph:
B1 = 2000000, B2 = 60000000 (P-1 stage 2)
B1 = 2000000 (P-1 stage 1)
B1 = 90000, B2 = 1822500 (P-1 stage 2)
B1 = 144422 (P-1 stage 1)
B1 = 117211 (P-1 stage 1)
B1 = 90000 (P-1 stage 1)
B1 = 75011 (P-1 stage 1)
B1 = 20000 (P-1 stage 1)
B1 = 2048, B2 = 204800 (P-1 stage 2)
B1 = 2048 (P-1 stage 1)
102
103
104
105
106
107
102
103
104
105
106
107
108
TF factor-bounds graph:
267
265
264
263
262
261
250
260
270
280
290
2100
Last modified: 2018-04-27T12:00:19+00:00