is 2 26494649 - 1
has 7975685 decimal digits
takes 24.526 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LDB9635F991EBD480double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual275288.809666.6667%32000068000000.90342.5297%289.713067.5099%0.8432%
PrimeNet2660.557462.1212%12000045000000.48145.1958%1.038864.0893%1.9681%
GPU722709.018864.2857%19000055000000.64333.7935%9.662265.6406%1.3548%
Difference+5+279.7908+2.3810%+130000+1300000+0.2601-1.2639%+280.0508+1.8693%+1.8693%

Known prime factors:
No known factors for M26494649

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2005-11-13T00:00:00ucfprimev4_computers3200006800000---0.903--2.530%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2004-06-04T00:00:00markrv4_computers21262--0.023--
2005-02-12T00:00:00tscv4_computers21267--1.122--
2011-10-23T15:14:00ANONYMOUSManual testing267268--1.128--
2012-02-11T23:06:00Carsten KossendeyManual testing268269--2.256--
2017-04-15T20:18:31ramgeisManual testing269270--4.513--
2021-04-30T18:46:12mikrManual testing270271--9.026--
2021-08-25T16:21:04TheJudgerManual testing271272--18.05--
2021-08-25T16:21:04TheJudgerManual testing272273--36.10--
2021-09-30T20:12:54TheJudgerManual testing273274--72.20--
2021-10-17T20:52:18TheJudgerManual testing274275--144.4--


ECM factoring results:
No ECM results for M26494649


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2006-01-01T00:00:00ucfprimev4_computers6BD310B14E65B2__24.53
2012-03-29T09:53:00ANONYMOUS01C40E6885685E__24.53
2012-06-26T05:06:00Tim SorberameDB9635F991EBD48024.53
2012-11-02T02:41:00LaurVbc2DB9635F991EBD48024.53


PRP results:
No PRP results for M26494649


P-1 factor-bounds graph:
B1 = 320000, B2 = 6800000 (P-1 stage 2)
B1 = 320000 (P-1 stage 1)
104
105
106
104
105
106
107
TF factor-bounds graph:
275
274
273
272
271
270
269
268
267
262
250
260
270
280
290
2100
Last modified: 2021-10-17T20:52:18+00:00