is 2 9083639 - 1
has 2734448 decimal digits
takes 2.511 GHz-days to do one PRP test
Last-known PrimeNet details:
0 L-L tests remaining
ResidueStatus
L-L386FB5E33F918406double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26913.143165.2174%20000001620000004.29518.5792%17.438173.7966%11.2966%
PrimeNet2640.391862.5000%3600010000000.03553.3316%0.427365.8316%3.3316%
GPU722686.561864.7059%6000013000000.05112.4034%6.612967.1093%2.4034%
Difference+1+6.5813+0.5115%+1940000+160700000+4.2440+6.1758%+10.8252+6.6873%+6.6873%

Known prime factors (1 factor, 124.5 bits, 0.00137048% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
90836392985971499383763377492427359006717590338124.4901643598726999038258506545316809
3 × 37 × 673 × 2333 × 23209 × 185849 × 780851 × 2800001
2021-04-1678085128000011.846e+100.35700.6369

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2009-07-01T05:45:00Carsten Kossendeyleela50000762500---0.036--1.773%
2012-12-14T20:15:00NesowaEPC1100002007500---0.086--2.665%
2021-04-16T12:28:19ThaZ-170200000016200000038124.4904.2955.0218.5908.579%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-01-10T00:00:00ANONYMOUSv4_computers?255--0.001--
1999-01-02T00:00:00ANONYMOUSv4_computers?262--0.034--
1999-02-21T00:00:00ANONYMOUSv4_computers?263--0.108--
2004-05-25T00:00:00Sturle Sundev4_computers?264--0.216--
2013-09-14T00:28:00NesowaManual testing264265--0.411--
2015-05-13T13:13:00VictordeHollanderManual testing265266--0.823--
2016-03-26T22:01:22snme2pm1Manual testing266267--1.645--
2017-01-21T05:31:42snme2pm1Manual testing267268--3.291--
2019-11-22T11:53:56TJAOIManual testing268269--6.581--


ECM factoring results:
Total ECM effort:1.261 GHz-days
Estimated T-Level:0.150
DigitsB1CurvesCompleteFacMiss
20110003 / 1000.03097.030%
25500003 / 2800.01198.932%

ECM Summary

B1B2factorcurvesGHz-days
50000500000031.261


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2000-01-19T00:00:00ANONYMOUSv4_computers386FB5E33F9184062.511
2003-02-27T00:00:00ANONYMOUSv4_computers386FB5E33F9184062.511


PRP results:
dateuseridcompidcofactorsres64PRP
2021-04-19T05:00:35ThomRuley
29859714993837633774924273590067175903
18D2F3586FA552__no
2021-04-20T13:07:04marssystemssystem11
29859714993837633774924273590067175903
18D2F3586FA552DBno


P-1 factor-bounds graph:
B1 = 2000000, B2 = 162000000 (stage 2)
B1 = 2000000 (stage 1)
B1 = 110000, B2 = 2007500 (stage 2)
B1 = 110000 (stage 1)
B1 = 50000, B2 = 762500 (stage 2)
B1 = 50000 (stage 1)
103
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103
104
105
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109
TF factor-bounds graph:
269
268
267
266
265
264
263
262
255
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260
270
280
290
2100
2110
2120
2130
Last modified: 2021-04-20T13:07:04+00:00