is 2 26670089 - 1
has 8028497 decimal digits
takes 24.688 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LBBE89CC59C6E1174double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27117.925664.7887%30000047250000.72633.5323%18.651966.0325%1.2438%
PrimeNet2660.553762.1212%12000045000000.48145.2003%1.035164.0910%1.9698%
GPU722708.959564.2857%19000055000000.64333.7969%9.602865.6418%1.3560%
Difference+1+8.9661+0.5030%+110000-775000+0.0829-0.2647%+9.0491+0.3907%+0.3907%

Known prime factors (1 factor, 67.4 bits, 0.00025264% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
266700891917807473729438397912167.3783595427585055
32 × 5 × 37 × 2159415967
2011-11-273721594159671.1323157.92294.95

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2005-01-20T00:00:00ANONYMOUSv4_computers3000004725000---0.726--3.532%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2011-11-27T23:23:00Carsten KossendeyManual testing??67.378210.01850.340.037
2004-06-12T00:00:00ANONYMOUSv4_computers21261--0.012--
2004-07-02T00:00:00ANONYMOUSv4_computers21262--0.023--
2004-09-16T00:00:00Team Prime Ribv4_computers21267--1.114--
2011-11-27T23:23:00Carsten KossendeyManual testing267271--16.81--


ECM factoring results:
No ECM results for M26670089


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2005-02-18T00:00:00ANONYMOUSv4_computersBBE89CC59C6E117424.69


PRP results:
No PRP results for M26670089


P-1 factor-bounds graph:
B1 = 300000, B2 = 4725000 (P-1 stage 2)
B1 = 300000 (P-1 stage 1)
100
101
102
103
104
105
106
100
101
102
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
271
267
262
261
2
250
260
270
280
290
2100
Last modified: 2011-11-27T23:23:36+00:00