is 2 3017671 - 1
has 908410 decimal digits
takes 0.257 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L750E76E4DA358250double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26939.562668.1159 %10000001199121000.92296.8389 %40.485570.2965 %
Target2641.179565.6250 %1300011000000.00891.4279 %1.188466.1159 %
Difference+5+38.3831+2.4909 %+987000+118812100+0.9140+5.4110%+39.2971+4.1806 %

Known prime factors (1 factor, 72.7 bits, 0.00241019% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
301767178414938103418013100792272.7321299262545576009
32 × 7 × 2309 × 52181 × 171167
2010-10-1652181171167502.770.00720.0131

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2003-12-23Team Prime Ribv4_computers1000010000--0.0010.314%
2004-02-07ANONYMOUSv4_computers2048204800--0.0020.570%
2010-10-16markrtiny2272.7320.0290.000%
2020-10-09JossManual testing30176730176716
skipped known factor: 7841493810341801310079
---4.959%
2022-01-22JossManual testing1000000119912100
skipped known factor: 7841493810341801310079
--1.13910.413%


Trial Factoring results:
57585960616263646566676869
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-05-09akohlerv4_computers212600.025
2009-01-30Jayson Kingatlas2602610.051
2010-09-18Sid & AndyBuzz2612620.102
2022-03-10LordJuliusManual testing262265
2021-03-13JossManual testing265267
2021-03-14JossManual testing267268
2021-12-22JossManual testing268269


ECM factoring results:
Total ECM effort:0.243 GHz-days
Estimated T-Level:0.577
DigitsB1CompleteFacMiss
20110000.11589.102%
25500000.01198.938%


ECM Summary

B1B2factorcurvesGHz-days
50000500000030.243


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-06-06akohlerv4_computers750E76E4DA3582500.257


PRP results:
dateuseridcompidcofactorsres64
2017-10-27Oliver KruseGTX-0
7841493810341801310079
1FEBAA9D10009559
2017-12-10kkmrkkblmbrbkc4.xlarge
7841493810341801310079
1FEBAA9D10009559


CERT results:
No CERT results for M3017671


P-1 factor-bounds graph:
B1 = 1000000, B2 = 119912100 (P-1 stage 2)
B1 = 1000000 (P-1 stage 1)
B1 = 301767, B2 = 3017671 (P-1 stage 2)
B1 = 301767 (P-1 stage 1)
B1 = 2048, B2 = 204800 (P-1 stage 2)
B1 = 10000 (P-1 stage 1)
B1 = 2048 (P-1 stage 1)
102
103
104
105
106
102
103
104
105
106
107
108
109
TF factor-bounds graph:
269
268
267
265
262
261
260
this exponent TF target: 64
TF double-checked to: 67
ECM T-Level=0.58 ~= -15-bit
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Last modified: 2024-03-13T02:15:48+00:00