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171 is the number following 170 and preceding 172.[1], and its factors are {1,3,9,19,57,171}.


Properties

  • It is an odd number[2].
  • The 171th element has not been discovered.


Approximations

Notation Expression
Up-arrow notation 13 ↑ 2
Fast-growing hierarchy f1(85)
Hardy hierarchy Hω(85)
Middle-growing hierarchy m(ω,7)


Sources

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