#jsDisabledContent { display:none; } My Account | Register | Help

# 179 (number)

Article Id: WHEBN0002290298
Reproduction Date:

 Title: 179 (number) Author: World Heritage Encyclopedia Language: English Subject: Collection: Integers Publisher: World Heritage Encyclopedia Publication Date:

### 179 (number)

Cardinal Invalid decimal numeral
Ordinal

%s+%([^%(]-%)\$||plain=false}}

Documentation
th
(Invalid decimal numeral)
Factorization prime
Prime 41st
Divisors 1, 179
Roman numeral
Binary
Ternary
Quaternary
Quinary
Senary
Octal
Duodecimal
Vigesimal
Base 36

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

## In mathematics

179 is an odd number.

179 is a prime number; that is, it is not divisible by integer (except for 1 and itself). It is an Eisenstein prime, as it is indivisible even by complex Gaussian integers. It is a Chen prime, being two less than another prime, 181. It is a full reptend prime, meaning 1/179 has a decimal expansion of a repeated sequence of 178 digits.

179 is a safe prime, as it is one more than two times the prime 89. It is also a Sophie Germain prime, as the prime 359 is one more than two times 179. It is only the fifth number with both of these properties (after 5, 11, 23, and 83).

179 is a strictly non-palindromic number. It is not a palindromic number in any base.

179 (of 365) days of the year are even numbered.