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189 is the number following 188 and preceding 190.[1], and its factors are {1,3,7,9,21,27,63,189}.

Properties[]


Approximations[]

Notation Expression
Up-arrow notation 13 ↑ 2
Fast-growing hierarchy f1(94)
Hardy hierarchy Hω(94)
Middle-growing hierarchy m(ω,7)

Sources[]

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