179 (number)

179 (one hundred [and] seventy-nine) is the natural number following 178 and preceding 180.

← 178 179 180 →
← 170 171 172 173 174 175 176 177 178 179 → List of numbers Integers ← 0 100 200 300 400 500 600 700 800 900 →
Cardinal	one hundred seventy-nine
Ordinal	179th (one hundred seventy-ninth)
Factorization	prime
Prime	41st
Divisors	1, 179
Greek numeral	ΡΟΘ´
Roman numeral	CLXXIX, clxxix
Binary	101100112
Ternary	201223
Senary	4556
Octal	2638
Duodecimal	12B12
Hexadecimal	B316

In mathematics

179 is part of the Cunningham chain of prime numbers 89, 179, 359, 719, 1439, 2879, in which each successive number is two times the previous number, plus one. Among Cunningham chains of this length, this one has the smallest numbers. Because 179 is neither the start nor the end of this chain, it is both a safe prime and a Sophie Germain prime.^[1] It is also a super-prime number, because it is the 41st smallest prime and 41 is also prime. Since 971 (the digits of 179 reversed) is prime, 179 is an emirp.

See also

• All pages with titles containing 179