253 (number)

253 (two hundred [and] fifty-three) is the natural number following 252 and preceding 254.

← 252 253 254 →
← 250 251 252 253 254 255 256 257 258 259 → List of numbers Integers ← 0 100 200 300 400 500 600 700 800 900 →
Cardinal	two hundred fifty-three
Ordinal	253rd (two hundred fifty-third)
Factorization	11 × 23
Divisors	1, 11, 23, 253
Greek numeral	ΣΝΓ´
Roman numeral	CCLIII, ccliii
Binary	111111012
Ternary	1001013
Senary	11016
Octal	3758
Duodecimal	19112
Hexadecimal	FD16

In mathematics

253 is:

• a semiprime since it is the product of 2 primes.
• a brilliant number, meaning that its prime factors have the same amount of digits^[1]
• the 22nd triangular number.^[2]
• a star number.^[3]
• a centered heptagonal number.^[4]
• a centered nonagonal number.^[5]
• a Blum integer.^[6]
• a member of the 13-aliquot tree.