is 2 26671699 - 1
has 8028982 decimal digits
takes 24.690 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L194816180D4EC8D4double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27117.924664.7887%28000030800000.58063.1743%18.505165.9064%1.1177%
PrimeNet2660.553762.1212%12000045000000.48145.2004%1.035164.0911%1.9698%
GPU722708.959064.2857%19000055000000.64333.7969%9.602365.6418%1.3561%
Difference+1+8.9656+0.5030%+90000-2420000-0.0628-0.6227%+8.9028+0.2647%-0.2383%

Known prime factors (1 factor, 68.0 bits, 0.00025514% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
266716993054943248052340653212168.0505726937845340
22 × 32 × 5 × 31816321363
2012-01-059318163213632.72962,326.74,345.7

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2005-11-27T00:00:00curtiscv4_computers2800003080000---0.581--3.174%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2012-01-05T07:11:00Carsten KossendeyManual testing??68.050210.49550.341.009
2004-06-12T00:00:00ANONYMOUSv4_computers21261--0.012--
2004-07-02T00:00:00ANONYMOUSv4_computers21262--0.023--
2004-11-22T00:00:00ANONYMOUSv4_computers21267--1.114--
2004-11-30T00:00:00ANONYMOUSv4_computers21267--1.114--
2012-01-02T22:43:00Carsten KossendeyManual testing267268--1.121--
2012-01-05T07:11:00Carsten KossendeyManual testing268271--15.69--


ECM factoring results:
No ECM results for M26671699


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2005-12-12T00:00:00curtiscv4_computers194816180D4EC8D424.69


PRP results:
No PRP results for M26671699


P-1 factor-bounds graph:
B1 = 280000, B2 = 3080000 (P-1 stage 2)
B1 = 280000 (P-1 stage 1)
100
101
102
103
104
105
106
100
101
102
103
104
105
106
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1010
1011
TF factor-bounds graph:
271
268
267
262
261
2
250
260
270
280
290
2100
Last modified: 2012-01-05T07:11:53+00:00