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169 (število)

Seznam števil - Cela števila

159 160 161 162 163 164 165 166 167 168 169 170

Glavni števnik sto devetinšestdeset
Vrstilni števnik stodevetinšestdeseti
Razcep
Rimska številka CLXIX
Dvojiško 10101001
Šestnajstiško A9
Matematične lastnosti
φ(169) = 156
τ(169) = 3 {1, 13, 169}
σ(169) = 183
π(169) = 39
μ(169) = 0
M(169) = -1

169 (stó devétinšéstdeset) je naravno število, za katero velja 169 = 168 + 1 = 170 - 1.

V matematiki

[uredi | uredi kodo]
  • sestavljeno število.
  • osmo središčno šestkotniško število .
  • osmo število Markova.
  • osmo Pellovo število.
  • središčno osemkotniško število.
  • 169 je vsota sedmih zaporednih praštevil, 169 = 13 + 17 + 19 + 23 + 29 + 31 + 37.


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169 (število)
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