is 2 739399 - 1
has 222582 decimal digits
takes 0.015 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L15A3D1B44E8B8CF9double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26740.186670.1493 %200000052194928508.290111.8904 %48.476773.6986 %
Target2440.000054.5455 %1200022500000.003916.6034 %0.003962.0924 %
Difference+23+40.1866+15.6038 %+1988000+5217242850+8.2862-4.7129 %+48.4728+11.6062 %

Known prime factors (1 factor, 68.3 bits, 0.00923655% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
7393993621010298426120745592168.295244861725430121
244861725430121
2012-10-151244861725430121139.08386,344721,583

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2002-01-02ANONYMOUSv4_computers2000200000--0.00011.780%
2002-02-03ANONYMOUSv4_computers4096409600--0.00114.684%
2002-03-24ANONYMOUSv4_computers8192819200--0.00217.468%
2002-05-11ANONYMOUSv4_computers163841638400--0.00320.218%
2002-07-14ANONYMOUSv4_computers32768327680012--0.00622.926%
2002-11-24ANONYMOUSv4_computers65537655370012--0.01225.584%
2003-06-30ANONYMOUSv4_computers1310721310720012--0.02428.185%
2011-07-10JossManual testing294844294844--0.00916.426%
2011-08-24JossManual testing491407491407--0.01418.010%
2011-10-15JossManual testing982814982814--0.02820.152%
2012-03-29JossManual testing14742221474222--0.04321.397%
2012-07-14JossManual testing14787981478798--0.04321.407%
2016-03-17alpertronManual testing5000001500000012---29.531%
2023-01-17USAFSS6917th_Scty_Sq20000005219492850--10.0746.356%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2000-09-08ANONYMOUSv4_computers212550.006
2001-03-25ANONYMOUSv4_computers212560.013
2001-12-01ANONYMOUSv4_computers212570.026
2003-09-29ANONYMOUSv4_computers212580.052
2008-10-14Sturle Sundemorovan.ifi2582600.156
2010-06-17Architects Cubedm1_tt2602610.208


ECM factoring results:
Total ECM effort:11.246 GHz-days
Estimated T-Level:25.656
DigitsB1CompleteFacMiss
201100014.7690.000%
25500001.61619.866%
302500000.13187.697%
3510000000.00999.130%


ECM Summary

B1B2factorcurvesGHz-days
10.023
5000050000002806.236
25000025000000444.987


Lucas-Lehmer results:
No L-L results for M739399


PRP results:
dateuseridcompidcofactorsres64
2017-09-27Oliver KruseGTX-3
362101029842612074559
BCB5E3D1B1EBEDB2
2017-09-28Oliver KruseManual testing
362101029842612074559
BCB5E3D1B1EBEDB2
2017-11-09kkmrkkblmbrbkc4.large
362101029842612074559
BCB5E3D1B1EBEDB2
2020-04-20Oliver KruseAddPrpType5
362101029842612074559
868807D3C2E93040


CERT results:
No CERT results for M739399


P-1 factor-bounds graph:
B1 = 2000000, B2 = 5219492850 (P-1 stage 2)
B1 = 2000000 (P-1 stage 1)
B1 = 1478798 (P-1 stage 1)
B1 = 1474222 (P-1 stage 1)
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 982814 (P-1 stage 1)
B1 = 131072, B2 = 13107200 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
B1 = 491407 (P-1 stage 1)
B1 = 65537, B2 = 6553700 (P-1 stage 2)
B1 = 294844 (P-1 stage 1)
B1 = 32768, B2 = 3276800 (P-1 stage 2)
B1 = 131072 (P-1 stage 1)
B1 = 16384, B2 = 1638400 (P-1 stage 2)
B1 = 65537 (P-1 stage 1)
B1 = 8192, B2 = 819200 (P-1 stage 2)
B1 = 32768 (P-1 stage 1)
B1 = 4096, B2 = 409600 (P-1 stage 2)
B1 = 16384 (P-1 stage 1)
B1 = 2000, B2 = 200000 (P-1 stage 2)
B1 = 8192 (P-1 stage 1)
B1 = 4096 (P-1 stage 1)
B1 = 2000 (P-1 stage 1)
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TF factor-bounds graph:
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255
this exponent TF target: 44
TF double-checked to: 67
ECM T-Level=25.66 ~= 69-bit
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Last modified: 2024-03-13T02:15:48+00:00