is 2 26763103 - 1
has 8056497 decimal digits
takes 24.774 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L06A7A218B980B55Edouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27117.863364.7887%4100004100000.55031.7140%18.413765.3922%0.6035%
PrimeNet2660.551862.1212%12000045000000.48145.2027%1.033264.0919%1.9707%
GPU722708.928464.2857%19000060000000.67993.8662%9.608365.6665%1.3808%
Difference+1+8.9350+0.5030%+220000-5590000-0.1296-2.1523%+8.8054-0.2743%-0.7773%

Known prime factors (1 factor, 67.6 bits, 0.00025273% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
267631032297190058602630776472167.6384291710977241
32 × 179 × 2664004331
2011-12-0417926640043312.1887194.82363.87

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2004-12-13T00:00:00ANONYMOUSv4_computers410000410000---0.550--1.714%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2011-12-04T08:11:00Carsten KossendeyManual testing??67.638211.07850.512.199
2004-07-02T00:00:00markrv4_computers21262--0.023--
2004-11-22T00:00:00ANONYMOUSv4_computers21267--1.110--
2011-12-04T08:10:00Carsten KossendeyManual testing267271--16.75--


ECM factoring results:
No ECM results for M26763103


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2005-01-20T00:00:00ANONYMOUSv4_computers06A7A218B980B55E24.77


PRP results:
No PRP results for M26763103


P-1 factor-bounds graph:
B1 = 410000 (P-1 stage 1)
101
102
103
104
105
106
101
102
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
271
267
262
2
250
260
270
280
290
2100
Last modified: 2011-12-04T08:11:03+00:00