172 (number)

172 (one hundred [and] seventy-two) is the natural number following 171 and preceding 173.

← 171 172 173 →
← 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-two
Ordinal	172nd (one hundred seventy-second)
Factorization	22 × 43
Divisors	1, 2, 4, 43, 86, 172
Greek numeral	ΡΟΒ´
Roman numeral	CLXXII, clxxii
Binary	101011002
Ternary	201013
Senary	4446
Octal	2548
Duodecimal	12412
Hexadecimal	AC16

In mathematics

172 is a part of a near-miss for being a counterexample to Fermat's Last Theorem, as 135³ + 138³ = 172³ − 1. This is only the third near-miss of this form, two cubes adding to one less than a third cube.^[1] It is also a "thickened cube number", half an odd cube (7³ = 343) rounded up to the next integer.^[2]

See also

• 172 (disambiguation)