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156 is the number following 155 and preceding 157.[1], and its factors are {1,2,3,4,6,12,13,26,39,52,78,156}.


Properties


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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