is 2 6954613 - 1
has 2093548 decimal digits
takes 1.516 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L3E6258DF3E3F80C7double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual272137.510768.0556%35000009616446840166.703011.2991%304.213771.6650%
Target2674.272565.6716%4500045000000.09102.2381%4.363566.4400%
Difference+5+133.2381+2.3839%+3455000+9611946840+166.6120+9.0610%+299.8502+5.2250%

Known prime factors (1 factor, 134.6 bits, 0.00193514% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
69546133258874450051531567701807789020902232691141134.5812342958874959348253958780876104035
32 × 5 × 13 × 929 × 10159 × 28517 × 149371 × 224513 × 443741971
2023-08-262245134437419712.137e+107.711214.277

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2009-06-20Roman MaznichenkoWorkShop850001615000---0.053--1.594%
2019-05-11takahashivaio30000050000006---0.176--2.684%
2021-06-18takahashivaio10000003000000012---0.816--4.562%
2023-08-26ThaZ-1703500000961644684041134.581166.73.033333.411.299%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-08-02ANONYMOUSv4_computers21262--0.088--
2004-03-26Sturle Sundev4_computers21263--0.229--
2014-02-09NesowaManual testing263264--0.282--
2014-02-16lycornManual testing264265--0.537--
2015-06-26VictordeHollanderManual testing265266--1.075--
2016-04-05Gordon SpenceManual testing266267--2.149--
2018-02-27-Anonymous-Manual testing267268--4.298--
2020-05-01TJAOIManual testing268269--8.596--
2021-08-01takahashiManual testing269270--17.19--
2021-08-12SRBaseManual testing270271--34.38--
2021-09-25SRBaseManual testing271272--68.77--


ECM factoring results:
Total ECM effort:1.989 GHz-days
Estimated T-Level:1.154
DigitsB1CompleteFacMiss
20110000.23179.392%
25500000.02197.887%
302500000.00199.865%


ECM Summary

B1B2factorcurvesGHz-days
50000500000061.989


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1997-01-01Paul Victor Novareseelroy03E6258DF3E3F80C71.516
1999-04-13ANONYMOUSv4_computers3E6258DF3E3F80C71.516
2015-11-13MadPooManual testing3E6258DF3E3F80C71.516


PRP results:
dateuseridcompidcofactorsres64PRP
2023-08-26Naegi Makoto12500H
32588744500515315677018077890209022326911
5D8CEDD42559E41Eno


P-1 factor-bounds graph:
B1 = 3500000, B2 = 9616446840 (P-1 stage 2)
B1 = 3500000 (P-1 stage 1)
B1 = 1000000, B2 = 30000000 (P-1 stage 2)
B1 = 1000000 (P-1 stage 1)
B1 = 300000, B2 = 5000000 (P-1 stage 2)
B1 = 300000 (P-1 stage 1)
B1 = 85000, B2 = 1615000 (P-1 stage 2)
B1 = 85000 (P-1 stage 1)
103
104
105
106
107
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
272
271
270
269
268
267
266
265
264
263
262
this exponent TF target: 67
TF double-checked to: 67.9
ECM T-Level=1.15 ~= -13-bit
250
260
270
280
290
2100
2110
2120
2130
2140
Last modified: 2023-09-25T11:53:03+00:00