Number 100 - properties and curiosities

100 (number)

100

Number 100 properties

  • Perfect square
  • Happy
  • Harshad
  • 100 is an even number.
  • 100 is a perfect square (10 × 10).
  • 100 is a Harshad number, which means it is divisible by the sum of its digits (100 = 1, and 100 is divisible by 1).

Prime factorization

Prime factorization of 100: 2^2 × 5^2.

Divisors

Divisor count: 9

1, 2, 4, 5, 10, 20, 25, 50, 100

Factors of 100 are: 1, 2, 4, 5, 10, 20, 25, 50, 100.

Representations

In octal, 100 is represented as 144.

In binary, 100 is represented as 1100100.

In hex, 100 is represented as 64.

Roman numeral: C

Curiosities

  • 100 is a perfect square, so it forms a square grid with equal side lengths.
  • 100 is divisible by the sum of its digits.

Quick answers

Is 100 prime?
No, 100 is not prime.

What are the factors of 100?
1, 2, 4, 5, 10, 20, 25, 50, 100

What is 100 in binary?
1100100