is 2 2133433 - 1
has 642228 decimal digits
takes 0.140 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L10604942438A0D06double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26713.927767.1642%500000150000000.12305.1630%14.050768.8595%1.6953%
PrimeNet2580.018062.0690%90001700000.00172.7298%0.019763.1044%1.0354%
GPU722620.288064.5161%100001500000.00171.4866%0.289665.0436%0.5275%
Difference+5+13.6398+2.6481%+490000+14850000+0.1213+3.6764%+13.7611+3.8158%+3.8158%

Known prime factors (1 factor, 69.2 bits, 0.00324143% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
21334336566776182664059870232169.154153901626689567
153901626689567
2013-04-201153901626689567111.85799,4041,493,063

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2011-01-12T23:59:00Jocelyn LaroucheManual testing5000050000---0.005--0.598%
2011-01-23T21:36:00James Heinrichi7-9201400003045000---0.028--3.113%
2016-03-22T01:59:20alpertronManual testing5000001500000012---0.123--5.163%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-01-29T00:00:00Dr. Daniel J. Weidmanv4_computers21258--0.018--
2002-10-26T00:00:00Dr. Daniel J. Weidmanv4_computers21258--0.018--
2022-03-09T10:02:00LordJuliusManual testing21260--0.072--
2009-01-05T05:16:00Sturle Sundedietrich.ifi260261--0.072--
2012-04-15T08:48:00Sebastian HornbostelManual testing261262--0.144--


ECM factoring results:

Old Calculation Method

Total ECM effort:13.899 GHz-days
Estimated T-Level:1.500
DigitsB1CurvesCompleteFacMiss
201100030 / 1000.30073.970%
255000030 / 2800.10789.823%
302500007 / 6400.01198.911%
3510000007 / 15660.00499.554%

New Calculation Method

Total ECM effort:13.899 GHz-days
Estimated T-Level:1.500
DigitsB1CompleteFacMiss
20110002.05112.857%
25500000.31572.965%
302500000.04195.959%
3510000000.00599.528%


ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0
500005000000231.961
1000000100000000711.94


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-01-29T00:00:00Dr. Daniel J. Weidmanv4_computers10604942438A0D060.140
2002-10-26T00:00:00Dr. Daniel J. Weidmanv4_computers10604942438A0D060.140


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-08T15:34:13Oliver KruseGTX-3
656677618266405987023
5BEEAFCC23359F__no
2017-11-18T03:08:58kkmrkkblmbrbkc4.xlarge
656677618266405987023
5BEEAFCC23359F__no


P-1 factor-bounds graph:
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
B1 = 140000, B2 = 3045000 (P-1 stage 2)
B1 = 140000 (P-1 stage 1)
B1 = 50000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-08-14T16:03:34+00:00