is 2 2692493 - 1
has 810522 decimal digits
takes 0.208 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LEBAA336BC2266305double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26711.035867.1642 %2000000600000000.57797.7055 %11.613769.6943 %
Target2630.592865.0794 %1400011000000.00821.6604 %0.601065.6592 %
Difference+4+10.4431+2.0848 %+1986000+58900000+0.5697+6.0451%+11.0128+4.0352 %

Known prime factors (1 factor, 66.6 bits, 0.00247292% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
26924931105513653269726239032166.58320529554826507
3 × 41 × 199 × 838728391
2016-04-1219983872839110.0595.11779.558

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2003-11-08ANONYMOUSv4_computers2048204800--0.0010.675%
2003-11-28Team Prime Ribv4_computers15000217500--0.0031.688%
2010-12-22JossManual testing2000020000--0.0020.632%
2010-12-26JossManual testing3000030000--0.0040.835%
2011-01-31markrtiny1050002310000--0.0284.517%
2019-07-04alpertronManual testing20000006000000012---10.637%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2016-02-23Mark RoseManual testing212600.057
2009-01-27Sturle Sundegicy.ifi2602610.057
2012-05-04markroldgamer2612620.114
2013-01-14dbaughManual testing2622630.365
2015-02-23VictordeHollanderManual testing2632652.117
2016-01-27ramgeisManual testing2652662.775


ECM factoring results:
Total ECM effort:1.231 GHz-days
Estimated T-Level:2.500
DigitsB1CompleteFacMiss
20110000.50060.653%
25500000.04695.479%
302500000.00399.709%


ECM Summary

B1B2factorcurvesGHz-days
500005000000121.130
50000500000010.101


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-04-23ANONYMOUSv4_computersEBAA336BC22663050.208


PRP results:
dateuseridcompidcofactorsres64
2017-10-19Oliver KruseGTX-0
110551365326972623903
C1CF8830858B1E4E
2017-12-04kkmrkkblmbrbkc4.xlarge
110551365326972623903
C1CF8830858B1E4E


CERT results:
No CERT results for M2692493


P-1 factor-bounds graph:
B1 = 2000000, B2 = 60000000 (P-1 stage 2)
B1 = 2000000 (P-1 stage 1)
B1 = 105000, B2 = 2310000 (P-1 stage 2)
B1 = 105000 (P-1 stage 1)
B1 = 30000 (P-1 stage 1)
B1 = 15000, B2 = 217500 (P-1 stage 2)
B1 = 20000 (P-1 stage 1)
B1 = 15000 (P-1 stage 1)
B1 = 2048, B2 = 204800 (P-1 stage 2)
B1 = 2048 (P-1 stage 1)
101
102
103
104
105
106
107
101
102
103
104
105
106
107
108
109
TF factor-bounds graph:
266
265
263
262
261
260
this exponent TF target: 63
TF double-checked to: 67
ECM T-Level=2.5 ~= -8-bit
250
260
270
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Last modified: 2024-03-13T02:15:48+00:00