158 (number)

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← 157 158 159 →
Cardinal one hundred fifty-eight
Ordinal 158th
(one hundred fifty-eighth)
Factorization 2 × 79
Divisors 1, 2, 79, 158
Greek numeral ΡΝΗ´
Roman numeral CLVIII, clviii
Binary 100111102
Ternary 122123
Senary 4226
Octal 2368
Duodecimal 11212
Hexadecimal 9E16

158 (one hundred [and] fifty-eight) is the natural number following 157 and preceding 159.

Contents

In mathematics

158 is a nontotient, since there is no integer with 158 coprimes below it. 158 is a Perrin number, appearing after 68, 90, 119. [1]

References

  1. ↑ "Sloane's A001608 : Perrin sequence". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-28.
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