is 2 1462193 - 1
has 440164 decimal digits
takes 0.056 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L629D08765B880CC0double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26720.321568.6567 %2000000600000000.28577.2353 %20.607170.9245 %
Target2600.105065.0000 %65004500000.00171.3990 %0.106765.4896 %
Difference+7+20.2164+3.6567 %+1993500+59550000+0.2840+5.8363%+20.5004+5.4348 %

Known prime factors (1 factor, 66.8 bits, 0.00456713% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
14621931267255023087570990172166.78043334054501956
22 × 23 × 233 × 2021555071
2015-11-26233202155507110.1006.097611.389

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2003-09-29Team Prime Ribv4_computers15000243750--0.0022.398%
2009-01-26axnManual testing8000001600000012--0.1169.866%
2015-05-17alpertronManual testing20000006000000012--0.33412.638%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2001-10-13ANONYMOUSv4_computers212570.013
2003-07-30ANONYMOUSv4_computers212580.026
2022-03-09LordJuliusManual testing21260
2010-05-08Architects Cubeda3_bu22602610.105
2011-03-08GrunwalderGIMPManual testing212631.091
2015-03-30snme2pm1Manual testing2632641.343
2015-03-30snme2pm1Manual testing2642652.555
2015-09-20ramgeisManual testing2652665.111


ECM factoring results:
Total ECM effort:29.624 GHz-days
Estimated T-Level:25.702
DigitsB1CompleteFacMiss
201100014.5770.000%
25500001.64419.326%
302500000.14086.905%
3510000000.01099.023%


ECM Summary

B1B2factorcurvesGHz-days
10.095
50000500000024913.53
250000350000005015.99


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-12-27Dry Creek Photov4_computers629D08765B880CC00.056
2015-06-27MadPooManual testing629D08765B880CC00.065


PRP results:
dateuseridcompidcofactorsres64
2017-09-30alpertronManual testing
126725502308757099017
3AEA4329F6D8C411
2017-10-18Oliver KruseThreadripper-PC
126725502308757099017
3AEA4329F6D8C411


CERT results:
No CERT results for M1462193


P-1 factor-bounds graph:
B1 = 2000000, B2 = 60000000 (P-1 stage 2)
B1 = 2000000 (P-1 stage 1)
B1 = 800000, B2 = 16000000 (P-1 stage 2)
B1 = 800000 (P-1 stage 1)
B1 = 15000, B2 = 243750 (P-1 stage 2)
B1 = 15000 (P-1 stage 1)
101
102
103
104
105
106
107
101
102
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
266
265
264
263
261
260
258
257
this exponent TF target: 60
TF double-checked to: 67
ECM T-Level=25.7 ~= 69-bit
250
260
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Last modified: 2024-02-29T14:28:04+00:00