173 (number)

173 (one hundred [and] seventy-three) is the natural number following 172 and preceding 174.

← 172 173 174 →
← 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-three
Ordinal	173rd (one hundred seventy-third)
Factorization	prime
Prime	40th
Divisors	1, 173
Greek numeral	ΡΟΓ´
Roman numeral	CLXXIII, clxxiii
Binary	101011012
Ternary	201023
Senary	4456
Octal	2558
Duodecimal	12512
Hexadecimal	AD16

In mathematics

173 is:

• an odd number.
• a deficient number.
• an odious number.
• a balanced prime.^[1]
• an Eisenstein prime with no imaginary part.
• a Sophie Germain prime.^[2]
• a Pythagorean prime.
• a Higgs prime.
• an isolated prime.
• a regular prime.
• a sexy prime.
• a truncatable prime.
• an inconsummate number.^[3]
• the sum of 2 squares: 2² + 13².
• the sum of three consecutive prime numbers: 53 + 59 + 61.
• Palindromic number in bases 3 (20102₃) and 9 (212₉).
• the 40th prime number following 167 and preceding 179.