is 2 1346711 - 1
has 405401 decimal digits
takes 0.051 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L9C69A34997A7DE42double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26722.064168.6567%500000150000000.07144.8842%22.135570.1876%1.5309%
PrimeNet2560.007162.5000%60001000000.00062.6118%0.007763.4794%0.9794%
GPU722600.114065.0000%5500400000.00040.9811%0.114565.3434%0.3434%
Difference+7+21.9500+3.6567%+494500+14960000+0.0710+3.9031%+22.0210+4.8442%+4.8442%

Known prime factors (1 factor, 61.7 bits, 0.00458224% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
134671137708490628684233031961.7101400021631541
13 × 302563 × 355939
2011-05-093025633559390.26960.01690.0341

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-09-21T00:00:00Team Prime Ribv4_computers15000217500---0.001--0.797%
2016-03-17T19:05:19alpertronManual testing5000001500000012-
skipped known factor: 3770849062868423303
--0.071--4.884%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-11-04T00:00:00ANONYMOUSv4_computers21257--0.014--
2003-06-30T00:00:00ANONYMOUSv4_computers21258--0.029--
2022-03-07T17:32:35LordJuliusManual testing258260--0.086--
2009-02-18T00:08:00Sturle Sundegoober.ifi260261--0.114--


ECM factoring results:

Old Calculation Method

Total ECM effort:25.192 GHz-days
Estimated T-Level:25.391
DigitsB1CurvesCompleteFacMiss
2011000301 / 1003.0104.855%
2550000301 / 2801.07534.064%
3025000050 / 6400.07892.479%

New Calculation Method

Total ECM effort:25.192 GHz-days
Estimated T-Level:25.391
DigitsB1CompleteFacMiss
201100014.6540.000%
25500001.65119.189%
302500000.14186.866%
3510000000.01099.021%


ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0
50000500000025111.73
250000350000005013.46


Lucas-Lehmer results:
No L-L results for M1346711


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-30T06:53:31Oliver KruseGTX-3
3770849062868423303
48C53D244DE2EF__no
2017-10-24T10:12:50kkmrkkblmbrbkc4.xlarge
3770849062868423303
48C53D244DE2EF__no


P-1 factor-bounds graph:
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
B1 = 15000, B2 = 217500 (P-1 stage 2)
B1 = 15000 (P-1 stage 1)
103
104
105
106
103
104
105
106
107
108
TF factor-bounds graph:
267
261
260
258
257
250
260
270
280
290
2100
Last modified: 2022-03-07T17:32:35+00:00