is 2 21106453 - 1
has 6353676 decimal digits
takes 14.958 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual27011.321264.2857%----11.321264.2857%
Target2695.656463.7681%16000045000000.40743.8250%6.063865.1540%
Difference+1+5.6648+0.5176%-160000-4500000-0.4074-3.8250%+5.2574-0.8683%

Known prime factors (6 factors, 268.6 bits, 0.00127257% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
21106453126638719926.9163
3
-134.238e-131.140e-62.091e-6
211064532304824667611237.7465460
22 × 3 × 5 × 7 × 13
2008-11-247131.025e-97.529e-61.464e-5
2110645333234643022871341.59678731
131 × 601
2008-10-011316011.445e-80.00020.0003
21106453401979995708091445.192952268
22 × 317 × 751
2008-10-013177512.484e-70.00040.0007
211064534756863889971591548.75711268743
11268743
2011-06-201112687431.993e-60.63091.1783
211064533857822818637337157212168.3869138965269620
22 × 3 × 5 × 139 × 149 × 7354357
2023-01-2814973543574.92070.41190.7690

57 Composite Factors:
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2011-06-20AxonManual testing2375.673-29.92-0.000%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-10-01markrManual testing??41.596135.73812e-1035.981.38025e-9
2008-10-01markrManual testing??45.192142.63413e-835.986.33612e-8
2008-11-24Will EdgingtonManual testing??37.746121.57723e-1035.983.79387e-10
2023-01-28LordJuliusManual testing267268--1.416--
2023-01-28LordJuliusManual testing26826968.386212.09730.324.251
2023-01-28LordJuliusManual testing26826968.512212.33730.324.738
2023-01-28LordJuliusManual testing269270--5.665--


ECM factoring results:
No ECM results for M21106453


Lucas-Lehmer results:
No L-L results for M21106453


PRP results:
dateuseridcompidcofactorsres64PRP
2023-02-23DobriGameOn
126638719
230482466761
3323464302287
40197999570809
475686388997159
385782281863733715721
5D7EF1712CA42A__no


P-1 factor-bounds graph:
100
101
102
103
100
101
102
103
104
105
106
107
108
TF factor-bounds graph:
270
269
268
2
this exponent TF target: 69
TF double-checked to: 67.7
250
260
270
Last modified: 2023-03-25T13:08:14+00:00