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157 is the number following 156 and preceding 158.[1], and its factors are {1,157}.


Properties

  • It is an odd number[2].
  • The 157th element has not been discovered.


Approximations

Notation Expression
Up-arrow notation 12 ↑ 2
Fast-growing hierarchy f1(78)
Hardy hierarchy Hω(78)
Middle-growing hierarchy m(ω,7)


Sources

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