is 2 26150713 - 1
has 7872150 decimal digits
takes 24.208 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L5C9E42F3CA8540DFdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27118.281764.7887%25000011875000.40412.4311%18.685865.6447%0.8560%
PrimeNet2660.564762.1212%12000045000000.48145.1868%1.046164.0859%1.9647%
GPU722709.137464.2857%19000055000000.64333.7869%9.780865.6382%1.3525%
Difference+1+9.1442+0.5030%+60000-4312500-0.2392-1.3558%+8.9050+0.0066%-0.4965%

Known prime factors (1 factor, 67.5 bits, 0.00025817% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
261507132104649245313148924232167.5124024076217947
3631 × 1108255637
2011-10-04363111082556371.578481.051151.37

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2004-10-18T00:00:00Wolfgang Fluckv4_computers2500001187500---0.404--2.431%
2011-10-04T08:13:00Carsten KossendeyManual testing25000011875002167.5120.40448.420.8082.431%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2004-09-02T00:00:00ANONYMOUSv4_computers21267--1.136--
2004-09-14T00:00:00ANONYMOUSv4_computers21267--1.136--
2011-10-04T08:12:00Carsten KossendeyManual testing267271--17.15--


ECM factoring results:
No ECM results for M26150713


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2004-12-13T00:00:00Wolfgang Fluckv4_computers5C9E42F3CA8540DF24.21


PRP results:
No PRP results for M26150713


P-1 factor-bounds graph:
B1 = 250000, B2 = 1187500 (P-1 stage 2)
B1 = 250000 (P-1 stage 1)
102
103
104
105
106
102
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
271
267
250
260
270
280
290
2100
Last modified: 2011-10-04T08:13:20+00:00