163 (number)

← 162 163 164 →
← 160 161 162 163 164 165 166 167 168 169 → List of numbers — Integers ← 0 100 200 300 400 500 600 700 800 900 →
Cardinal	one hundred sixty-three
Ordinal	163rd (one hundred and sixty-third)
Factorization	prime
Prime	38th
Divisors	1, 163
Roman numeral	CLXIII
Binary	101000112
Ternary	200013
Quaternary	22034
Quinary	11235
Senary	4316
Octal	2438
Duodecimal	11712
Hexadecimal	A316
Vigesimal	8320
Base 36	4J36

163 (one hundred [and] sixty-three) is the natural number following 162 and preceding 164.

163 is a strong prime in the sense that it is greater than the arithmetic mean of its two neighboring primes.

163 is a lucky prime and a fortunate number.

163 is a strictly non-palindromic number, since it is not palindromic in any base between base 2 and base 161.

Given 163, the Mertens function returns 0, it is the fourth prime with this property, the first three such primes are 2, 101 and 149.

163 figures in an approximation of π, in which ${\displaystyle \pi \approx {2^{9} \over 163}\approx 3.1411}$.

163 figures in an approximation of e, in which ${\displaystyle e\approx {163 \over 3\cdot 4\cdot 5}\approx 2.7166\dots }$.

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