is 2 1367447 - 1
has 411643 decimal digits
takes 0.052 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LDDAF4D7B684B3AD3double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26721.729568.6567 %42580861631380920.71508.8884 %22.444471.4426 %
Target2600.112365.0000 %55002750000.00111.1041 %0.113465.3864 %
Difference+7+21.6172+3.6567 %+4252586+162863092+0.7138+7.7843%+22.3310+6.0562 %

Known prime factors (1 factor, 69.1 bits, 0.00505650% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
13674476526787913710116820332169.145238648661107528
23 × 7 × 4261583234063
2015-07-298426158323406387.30612,85424,008

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2003-09-21Team Prime Ribv4_computers15000225000--0.0012.318%
2003-09-21Xyzzyv4_computers15000225000--0.0012.318%
2014-04-15ANONYMOUSManual testing145000145000--0.0092.614%
2014-04-20JossManual testing200000200000--0.0132.992%
2014-08-27mikrMSI425808616313809212--0.71514.787%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2001-11-03ANONYMOUSv4_computers212570.014
2003-06-30ANONYMOUSv4_computers212580.028
2022-03-07LordJuliusManual testing258260
2009-02-16Sturle Sundebruch.ifi2602610.112
2011-05-09XyzzyManual testing2612620.225
2013-01-23dbaughManual testing2622630.718
2015-04-16snme2pm1Manual testing2632641.436
2015-04-16snme2pm1Manual testing2642652.732


ECM factoring results:
Total ECM effort:29.170 GHz-days
Estimated T-Level:25.704
DigitsB1CompleteFacMiss
201100014.6540.000%
25500001.65119.189%
302500000.14186.866%
3510000000.01099.021%


ECM Summary

B1B2factorcurvesGHz-days
50000500000024913.29
50000500000020.094
250000350000005015.79


Lucas-Lehmer results:
No L-L results for M1367447


PRP results:
dateuseridcompidcofactorsres64
2017-09-30Oliver KruseGTX-0
652678791371011682033
DCB8A98B6D1EFDEB
2017-10-25kkmrkkblmbrbkc4.xlarge
652678791371011682033
DCB8A98B6D1EFDEB


CERT results:
No CERT results for M1367447


P-1 factor-bounds graph:
B1 = 4258086, B2 = 163138092 (P-1 stage 2)
B1 = 4258086 (P-1 stage 1)
B1 = 200000 (P-1 stage 1)
B1 = 145000 (P-1 stage 1)
B1 = 15000, B2 = 225000 (P-1 stage 2)
B1 = 15000 (P-1 stage 1)
100
101
102
103
104
105
106
107
100
101
102
103
104
105
106
107
108
109
1010
1011
1012
1013
TF factor-bounds graph:
265
264
263
262
261
260
258
257
this exponent TF target: 60
TF double-checked to: 67
ECM T-Level=25.7 ~= 69-bit
250
260
270
JSON version of this page
Last modified: 2024-02-09T03:30:02+00:00