is 2 3498493 - 1
has 1053152 decimal digits
takes 0.367 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L63ECC4DEDF6F0182double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26817.037367.6471%10000001146568501.09537.5291%18.132670.0830%2.4359%
PrimeNet2600.043963.3333%150003000000.00462.9602%0.048664.4187%1.0854%
GPU722641.017465.6250%200003600000.00591.9153%1.023366.2834%0.6584%
Difference+4+16.0199+2.0221%+980000+114296850+1.0895+5.6139%+17.1094+3.7996%+3.7996%

Known prime factors (1 factor, 62.5 bits, 0.00178722% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
349849366400445572504264791962.526948986400323
13 × 2203 × 33136157
2009-07-232203331361570.38840.27530.5135

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2009-07-09T04:55:00Carsten Kossendeyleela20000240000---0.005--0.947%
2020-12-12T08:56:33Jocelyn LaroucheManual testing34984934984936---0.079--3.515%
2022-01-25T03:36:14Jocelyn LaroucheManual testing1000000114656850-
skipped known factor: 6640044557250426479
--1.095--7.529%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2009-03-19T18:07:00S485122USB-Z260261--0.044--
2022-05-27T23:20:30LordJuliusManual testing21262--0.176--
2022-05-27T23:20:30LordJuliusManual testing26226362.526190.2130.7460.432
2022-05-27T23:20:31LordJuliusManual testing263264--0.561--
2022-05-27T23:20:31LordJuliusManual testing264265--1.068--
2021-02-21T11:36:45Jocelyn LaroucheManual testing265266--2.136--
2022-05-31T03:51:41LordJuliusManual testing265266--2.136--
2021-02-23T01:24:29Jocelyn LaroucheManual testing266267--4.272--
2022-05-31T03:51:41LordJuliusManual testing266267--4.272--
2021-06-14T13:03:45Jocelyn LaroucheManual testing267268--8.544--


ECM factoring results:

Old Calculation Method

Total ECM effort:0.000 GHz-days
DigitsB1CurvesCompleteFacMiss

New Calculation Method

Total ECM effort:0.000 GHz-days
DigitsB1CompleteFacMiss


ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-09-07T00:00:00akohlerv4_computers63ECC4DEDF6F01820.367


PRP results:
dateuseridcompidcofactorsres64PRP
2017-11-07T17:17:34Oliver KruseGTX-3
6640044557250426479
DECBF22AFB4C0A__no
2017-12-16T19:29:18ATHec2-1xf
6640044557250426479
DECBF22AFB4C0A__no


P-1 factor-bounds graph:
B1 = 1000000, B2 = 114656850 (P-1 stage 2)
B1 = 1000000 (P-1 stage 1)
B1 = 349849, B2 = 3498493 (P-1 stage 2)
B1 = 349849 (P-1 stage 1)
B1 = 20000, B2 = 240000 (P-1 stage 2)
B1 = 20000 (P-1 stage 1)
102
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105
106
102
103
104
105
106
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108
109
TF factor-bounds graph:
268
267
266
265
264
263
262
261
250
260
270
280
290
2100
Last modified: 2022-05-31T03:51:41+00:00