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198 is the number following 197 and preceding 199.[1], and its factors are {1,2,3,6,9,11,18,22,33,66,99,198}.


Properties


Approximations

Notation Expression
Up-arrow notation 14 ↑ 2
Fast-growing hierarchy f1(99)
Hardy hierarchy Hω(99)
Middle-growing hierarchy m(ω,7)


Sources

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