is 2 26494639 - 1
has 7975682 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-LF0742C3FB8A2E876double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27118.044364.7887%4050004050000.54361.7020%18.588065.3880%0.5993%
PrimeNet2660.557462.1212%12000045000000.48145.1958%1.038864.0893%1.9681%
GPU722709.018864.2857%19000055000000.64333.7935%9.662265.6406%1.3548%
Difference+1+9.0255+0.5030%+215000-5095000-0.0997-2.0915%+8.9258-0.2525%-0.2525%

Known prime factors (1 factor, 67.2 bits, 0.00025350% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
264946391652221220300088675192167.1633118029312081
3 × 19 × 54702268633
2011-07-2419547022686331.68344,000.47,471.6

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2006-01-15T00:00:00curtiscv4_computers405000405000---0.544--1.702%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2011-07-24T07:06:00Carsten KossendeyManual testing??67.163210.56250.011.146
2004-06-04T00:00:00markrv4_computers21262--0.023--
2004-08-20T00:00:00Bartv4_computers21267--1.122--
2011-07-24T07:06:00Carsten KossendeyManual testing267271--16.92--


ECM factoring results:
No ECM results for M26494639


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2006-02-01T00:00:00curtiscv4_computersF0742C3FB8A2E87624.53


PRP results:
No PRP results for M26494639


P-1 factor-bounds graph:
B1 = 405000 (P-1 stage 1)
100
101
102
103
104
105
106
100
101
102
103
104
105
106
107
108
109
1010
1011
TF factor-bounds graph:
271
267
262
2
250
260
270
280
290
2100
Last modified: 2011-07-24T07:06:23+00:00