is 2 2365439 - 1
has 712069 decimal digits
takes 0.160 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L92A29C1B5CC32F49double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26825.198267.6471 %30000001000000000.81157.8355 %26.009870.1821 %
Target2630.674765.0794 %100007000000.00471.2710 %0.679465.5232 %
Difference+5+24.5235+2.5677 %+2990000+99300000+0.8069+6.5645%+25.3304+4.6589 %

Known prime factors (1 factor, 78.9 bits, 0.00333469% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
23654395562289931029719017706792478.880117574157080984101
3 × 83 × 5849 × 80729247701
2020-12-3158498072924770125,880430.84804.69

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2003-09-21ANONYMOUSv4_computers2048204800--0.0010.652%
2010-11-03JossManual testing2000020000--0.0020.614%
2010-12-30markrtiny10000020250006--0.0214.282%
2014-09-10JossManual testing127134127134--0.0131.835%
2015-09-09mikrMSI300000010000000012--0.81211.555%


Trial Factoring results:
575859606162636465666768
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-03-01ANONYMOUSv4_computers212590.016
2016-02-23Mark RoseManual testing2592600.032
2009-01-14Sturle Sunderodolfo.ifi2602610.065
2012-05-30Sebastian HornbostelManual testing2612620.130
2013-01-23dbaughManual testing2622630.415
2015-03-09VictordeHollanderManual testing2632640.830
2015-03-09VictordeHollanderManual testing2642651.580
2015-10-30ramgeisManual testing2652663.159
2017-06-16Gordon SpenceManual testing2662676.318
2019-04-15TJAOIManual testing26726812.64


ECM factoring results:
Total ECM effort:10.027 GHz-days
Estimated T-Level:22.028
DigitsB1CompleteFacMiss
20110004.3851.247%
25500000.40666.651%
302500000.02697.474%
3510000000.00199.880%


ECM Summary

B1B2factorcurvesGHz-days
5000050000001099.58
50000500000050.444


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-03-15ANONYMOUSv4_computers92A29C1B5CC32F490.160
2018-05-11kkmrkkblmbrbkold92A29C1B5CC32F490.160


PRP results:
dateuseridcompidcofactorsres64
2021-01-01Niels_Mache_Nextcloudconf4-a
556228993102971901770679
B616A35BEB71D013


CERT results:
dateuseridcompid
2021-01-01Ben Deloi-04acc53bfa43cf255


P-1 factor-bounds graph:
B1 = 3000000, B2 = 100000000 (P-1 stage 2)
B1 = 3000000 (P-1 stage 1)
B1 = 100000, B2 = 2025000 (P-1 stage 2)
B1 = 127134 (P-1 stage 1)
B1 = 100000 (P-1 stage 1)
B1 = 20000 (P-1 stage 1)
B1 = 2048, B2 = 204800 (P-1 stage 2)
B1 = 2048 (P-1 stage 1)
102
103
104
105
106
107
102
103
104
105
106
107
108
109
1010
1011
TF factor-bounds graph:
268
267
266
265
264
263
262
261
260
259
this exponent TF target: 63
TF double-checked to: 67
ECM T-Level=22.03 ~= 57-bit
250
260
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280
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Last modified: 2024-02-29T14:28:04+00:00