is 2 12274013 - 1
has 3694847 decimal digits
takes 4.725 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LFD34963A488FA84Bdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2684.856264.7059 %4000002866455908.92958.7150 %13.785667.7818 %
Target2684.856264.7059 %90000110000000.38213.0820 %5.238365.7936 %
Difference---+310000+275645590+8.5474+5.6330%+8.5474+1.9881 %

Known prime factors (2 factors, 147.1 bits, 0.00119841% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
12274013115638258669297382237432373.292471069480981067
113 × 55343 × 75325813
2022-02-185534375325813155.852.32024.2790
12274013164582349176506386161112373.801670450443455235
3 × 5 × 1831 × 3917 × 6232087
2016-03-0539176232087155.850.19160.3540

1 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2001-04-01ANONYMOUSv4_computers1450001957500--0.1363.244%
2001-04-15ANONYMOUSv4_computers1450001957500--0.1363.244%
2001-05-20ANONYMOUSv4_computers1450001957500--0.1363.244%
2001-07-17ANONYMOUSv4_computers1450001957500--0.1363.244%
2001-08-18ANONYMOUSv4_computers1450001957500--0.1363.244%
2001-09-30ANONYMOUSv4_computers1450001957500--0.1363.244%
2001-12-22ANONYMOUSv4_computers1450001957500--0.1363.244%
2002-02-10ANONYMOUSv4_computers1450001957500--0.1363.244%
2002-07-14ANONYMOUSv4_computers1450001957500--0.1363.244%
2002-10-26ANONYMOUSv4_computers1450001957500--0.1363.244%
2022-02-06nordisweet16_30.8b10400000400000--0.2232.148%
2022-02-18nordisweet16_30.8b1040000028664559022373.29211.118.715%


Trial Factoring results:
575859606162636465666768
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2000-03-08ANONYMOUSv4_computers212640.160
2013-08-04lycornManual testing2642650.304
2013-09-29NesowaManual testing2652660.609
2015-03-06ThaManual testing2662671.218
2015-07-25ThaManual testing2672682.435


ECM factoring results:
Total ECM effort:0.585 GHz-days
Estimated T-Level:0.192
DigitsB1CompleteFacMiss
20110000.03896.227%
25500000.00499.645%


ECM Summary

B1B2factorcurvesGHz-days
50000500000010.585


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2001-07-17ANONYMOUSv4_computersFD34963A488FA84B4.725
2001-07-17curtiscv4_computersFD34963A488FA84B4.725
2001-08-18ANONYMOUSv4_computersFD34963A488FA84B4.725
2001-09-30ANONYMOUSv4_computersFD34963A488FA84B4.725
2001-12-22ANONYMOUSv4_computersFD34963A488FA84B4.725
2002-02-10ANONYMOUSv4_computersFD34963A488FA84B4.725
2002-07-14ANONYMOUSv4_computersFD34963A488FA84B4.725
2002-10-26ANONYMOUSv4_computersFD34963A488FA84B4.725


PRP results:
dateuseridcompidcofactorsres64
2022-02-24Poaooffice-CN2
16458234917650638616111
11563825866929738223743
18CCE75D25ED6BCA


CERT results:
dateuseridcompid
2022-02-25HangM1


P-1 factor-bounds graph:
B1 = 400000, B2 = 286645590 (P-1 stage 2)
B1 = 400000 (P-1 stage 1)
B1 = 145000, B2 = 1957500 (P-1 stage 2)
B1 = 145000 (P-1 stage 1)
102
103
104
105
106
102
103
104
105
106
107
108
109
TF factor-bounds graph:
268
267
266
265
264
this exponent TF target: 68
TF double-checked to: 67
ECM T-Level=0.19 ~= -16-bit
250
260
270
280
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Last modified: 2024-02-29T14:28:04+00:00