is 2 1475113 - 1
has 444054 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-L8A0E01CF21C87CF3double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26720.143568.6567 %500000150000000.07144.9384 %20.214970.2046 %
Target2600.104165.0000 %65005000000.00181.4482 %0.106065.5069 %
Difference+7+20.0394+3.6567 %+493500+14500000+0.0696+3.4902%+20.1089+4.6977 %

Known prime factors (1 factor, 65.4 bits, 0.00443392% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1475113488599383218298013932065.40516561422183192
23 × 3 × 953 × 2713 × 266897
2010-11-0627132668974.94590.00090.0015

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2002-04-14Jossv4_computers20000155000--0.0022.250%
2010-11-05Rob_Deetwopc100000200000--0.0072.985%
2010-11-06Rob_Deetwopc2065.4050.0130.000%
2016-03-17alpertronManual testing5000001500000012
skipped known factor: 48859938321829801393
---9.460%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2003-07-30ANONYMOUSv4_computers212580.026
2022-03-09LordJuliusManual testing21260
2022-03-08LordJuliusManual testing258260
2010-05-10Architects Cubedm1_tt2602610.104


ECM factoring results:
Total ECM effort:29.847 GHz-days
Estimated T-Level:25.704
DigitsB1CompleteFacMiss
201100014.6540.000%
25500001.65119.189%
302500000.14186.866%
3510000000.01099.021%


ECM Summary

B1B2factorcurvesGHz-days
50000500000025113.82
250000350000005016.02


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-11-14ANONYMOUSv4_computersFFB8F88F93D1F0190.056


PRP results:
dateuseridcompidcofactorsres64
2017-10-01Oliver KruseGTX-2
48859938321829801393
899B6E207BD75B9C
2017-10-28kkmrkkblmbrbkold
48859938321829801393
899B6E207BD75B9C


CERT results:
No CERT results for M1475113


P-1 factor-bounds graph:
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
B1 = 100000, B2 = 200000 (P-1 stage 2)
B1 = 100000 (P-1 stage 1)
B1 = 20000, B2 = 155000 (P-1 stage 2)
B1 = 20000 (P-1 stage 1)
102
103
104
105
106
102
103
104
105
106
107
108
TF factor-bounds graph:
261
260
258
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