is 2 13770467 - 1
has 4145324 decimal digits
takes 6.110 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L796242DC5D7C06D8double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual27269.448266.6667%1600000160471740057.21989.1856%126.668069.7285%
Target2698.669865.2174%90000176000000.67162.7907%9.341466.1881%
Difference+3+60.7784+1.4493%+1510000+1587117400+56.5482+6.3949%+117.3266+3.5405%

Known prime factors (1 factor, 134.0 bits, 0.00097308% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
137704672173654091776758354254130128186515917403941133.997789244871570716648264045848331257
3 × 47 × 83 × 103 × 26347 × 63499 × 203249 × 1153057 × 1669937
2023-07-30115305716699371.047e+100.75991.5097

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2002-02-24ANONYMOUSv4_computers1650003753750---0.232--2.500%
2023-03-22nordisweet16_30.8b1416000001600000---1.029--2.417%
2023-07-30nordisweet16_30.8b141600000160471740041133.99757.2212.22114.49.186%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2000-09-15ANONYMOUSv4_computers21255--0.000--
2000-09-29ANONYMOUSv4_computers21264--0.258--
2000-12-31ANONYMOUSv4_computers21265--0.530--
2014-07-02NesowaManual testing265266--0.543--
2015-08-19NesowaManual testing266267--1.085--
2017-12-23-Anonymous-Manual testing267268--2.171--
2018-01-14ramgeisManual testing268269--4.341--
2021-08-08SRBaseManual testing269270--8.683--
2021-09-04SRBaseManual testing270271--17.37--
2021-10-01Jon PaceManual testing271272--34.73--


ECM factoring results:
Total ECM effort:0.675 GHz-days
Estimated T-Level:0.192
DigitsB1CompleteFacMiss
20110000.03896.227%
25500000.00499.645%


ECM Summary

B1B2factorcurvesGHz-days
50000500000010.675


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2002-03-10ANONYMOUSv4_computers796242DC5D7C06D86.110
2005-02-18ANONYMOUSv4_computers796242DC5D7C06D86.110


PRP results:
dateuseridcompidcofactorsres64PRP
2023-08-02Naegi Makoto12500H
21736540917767583542541301281865159174039
9B00E37B310A97D2no


P-1 factor-bounds graph:
B1 = 1600000, B2 = 1604717400 (P-1 stage 2)
B1 = 1600000 (P-1 stage 1)
B1 = 165000, B2 = 3753750 (P-1 stage 2)
B1 = 165000 (P-1 stage 1)
104
105
106
107
104
105
106
107
108
109
1010
TF factor-bounds graph:
272
271
270
269
268
267
266
265
264
255
this exponent TF target: 69
TF double-checked to: 67.9
ECM T-Level=0.19 ~= -16-bit
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Last modified: 2023-08-02T01:04:02+00:00