MathQuarryCalculators

Primes / Is 165 prime?

Is 165 a Prime Number?

No165 = 3 x 5 x 11

165 is NOT prime: 3 × 55 = 165. That makes 3 a genuine divisor of 165 beyond 1 and 165 itself. Fully broken down, 165 = 3 × 5 × 11, for 8 divisors total. 165 sits between primes 163 and 167, 2 below and 2 above. 165: 3, 5, 11 divide 165 evenly, checked against 2-12. 165 is odd, digit sum 12 for 165, digital root 3 for 165. 165 has 4 primes within 10 of 165.

Factors
1, 3, 5, 11, 15, 33, 55, 165
Number of factors
8
Prime?
No
Prime factorization
3 x 5 x 11
Even or odd
Odd
Square
27225
Cube
4492125
Binary
10100101
Hexadecimal
A5
Roman numeral
CLXV
Perfect square?
No
Perfect cube?
No
Perfect number?
No
Triangular number?
No
Fibonacci number?
No
Full facts for 165 →Factors of 165 →