is 2 1139491 - 1
has 343021 decimal digits
takes 0.034 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LF45DCB8060F7249Fdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26726.076568.6567%500000100000000.04374.4218%26.120270.0426%1.3859%
PrimeNet2560.008462.5000%5000700000.00042.1588%0.008863.3095%0.8095%
GPU722600.134865.0000%5000260000.00030.7691%0.135165.2692%0.2692%
Difference+7+25.9417+3.6567%+495000+9974000+0.0435+3.6526%+25.9852+4.7734%+4.7734%

Known prime factors (1 factor, 76.1 bits, 0.00667616% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1139491795459228213435511416712376.07434904147036415185
5 × 29 × 31 × 318671 × 24367153
2014-03-093186712436715316,7590.07000.1066

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2002-04-07T00:00:00Jocelyn Larouchev4_computers10000102500---0.001--0.507%
2002-06-02T00:00:00ANONYMOUSv4_computers500001000000---0.004--1.740%
2012-01-30T06:40:00markrtiny50000010000000---0.044--4.422%
2016-03-17T19:01:48alpertronManual testing3000001000000012---0.036--4.134%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-11-17T00:00:00ANONYMOUSv4_computers21257--0.017--
2003-04-27T00:00:00ANONYMOUSv4_computers21258--0.034--
2022-03-07T17:30:53LordJuliusManual testing258260--0.101--
2009-02-15T07:01:00Sturle Sundeklughardt.ifi260261--0.135--
2022-04-12T17:43:23LordJuliusManual testing21261--0.270--
2012-08-17T23:07:00AxelssonManual testing261262--0.270--
2022-04-12T17:43:23LordJuliusManual testing261262--0.270--
2012-10-21T10:08:00dbaughManual testing262263--0.861--
2022-04-12T17:43:23LordJuliusManual testing262263--0.861--
2022-04-12T17:43:23LordJuliusManual testing263264--1.723--


ECM factoring results:

Old Calculation Method

Total ECM effort:17.616 GHz-days
Estimated T-Level:25.344
DigitsB1CurvesCompleteFacMiss
2011000322 / 1003.2203.931%
2550000322 / 2801.15031.599%
3025000044 / 6400.06993.351%

New Calculation Method

Total ECM effort:17.616 GHz-days
Estimated T-Level:25.344
DigitsB1CompleteFacMiss
201100012.6340.000%
25500001.34126.168%
302500000.10789.841%
3510000000.00799.298%


ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0
5000050000002789.83
25000025000000447.782


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2002-06-29T00:00:00ANONYMOUSv4_computersF45DCB8060F7249F0.034


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-29T06:06:09Oliver KruseGTX-2
79545922821343551141671
3E22D83214C4CB__no
2017-10-17T02:11:36Oliver KruseThreadripper
79545922821343551141671
3E22D83214C4CB__no
2018-01-05T23:45:48ATHec2-1xf
79545922821343551141671
3E22D83214C4CB__no


P-1 factor-bounds graph:
B1 = 500000, B2 = 10000000 (P-1 stage 2)
B1 = 300000, B2 = 10000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
B1 = 300000 (P-1 stage 1)
B1 = 50000, B2 = 1000000 (P-1 stage 2)
B1 = 50000 (P-1 stage 1)
B1 = 10000, B2 = 102500 (P-1 stage 2)
B1 = 10000 (P-1 stage 1)
103
104
105
106
103
104
105
106
107
108
TF factor-bounds graph:
267
264
263
262
261
260
258
257
250
260
270
280
290
2100
Last modified: 2022-04-12T17:43:23+00:00