is 2 2762033 - 1
has 831455 decimal digits
takes 0.213 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LA94F4F7161DAACCEdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26710.758067.1642 %3600002873801701.79167.9795 %12.549669.7843 %
Target2630.577865.0794 %1500012000000.00891.7453 %0.586865.6888 %
Difference+4+10.1801+2.0848 %+345000+286180170+1.7827+6.2342%+11.9629+4.0955 %

Known prime factors (1 factor, 73.4 bits, 0.00265764% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
2762033125058504754083055907932373.4052263885057747012
22 × 72 × 17 × 1063 × 639169607
2017-01-1510636391696071,213.13.90017.2841

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2003-11-16ANONYMOUSv4_computers2048204800--0.0010.679%
2010-12-03markrtiny11000023650006--0.0294.586%
2016-08-08JossManual testing14200047300006--0.0485.462%
2016-12-23JossManual testing204480204480---2.337%
2017-02-25JossManual testing29445129445106---5.386%
2023-02-26USAFSS6917th_Scty_Sq360000287380170--1.97411.258%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2016-02-23Mark RoseManual testing212600.056
2009-01-31Sturle Sundebruckner.ifi2602610.056
2012-03-17markroldgamer2612620.111
2013-01-10dbaughManual testing2622630.355
2015-04-21VictordeHollanderManual testing2632652.064
2016-02-08ramgeisManual testing2652662.706


ECM factoring results:
Total ECM effort:2.060 GHz-days
Estimated T-Level:4.038
DigitsB1CompleteFacMiss
20110000.80844.589%
25500000.07592.799%
302500000.00599.530%


ECM Summary

B1B2factorcurvesGHz-days
500005000000181.748
50000500000030.312


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-05-09dawiltsv4_computersA94F4F7161DAACCE0.213
2003-07-30dawiltsv4_computersA94F4F7161DAACCE0.213
2003-09-09dawiltsv4_computersA94F4F7161DAACCE0.213


PRP results:
dateuseridcompidcofactorsres64
2017-10-20Oliver KruseGTX-3
12505850475408305590793
E57620EE767235C9
2017-12-05kkmrkkblmbrbkc4.xlarge
12505850475408305590793
E57620EE767235C9


CERT results:
No CERT results for M2762033


P-1 factor-bounds graph:
B1 = 360000, B2 = 287380170 (P-1 stage 2)
B1 = 294451, B2 = 2944510 (P-1 stage 2)
B1 = 142000, B2 = 4730000 (P-1 stage 2)
B1 = 360000 (P-1 stage 1)
B1 = 294451 (P-1 stage 1)
B1 = 110000, B2 = 2365000 (P-1 stage 2)
B1 = 204480 (P-1 stage 1)
B1 = 142000 (P-1 stage 1)
B1 = 110000 (P-1 stage 1)
B1 = 2048, B2 = 204800 (P-1 stage 2)
B1 = 2048 (P-1 stage 1)
102
103
104
105
106
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=4.04 ~= -3-bit
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Last modified: 2024-03-13T02:15:48+00:00