91 is a composite number. A composite number is a positive integer that has at least one positive divisor other than one or itself. In other words, it can be formed by multiplying two smaller positive integers.
To determine whether 91 is a composite number, we can check its divisors. The number 91 can be divided evenly by 1, 7, 13, and 91. Since it has divisors other than 1 and itself, it is not a prime number.
Here’s a breakdown:
- 91 ÷ 7 = 13
- 91 ÷ 13 = 7
As you can see, 91 can be expressed as the product of 7 and 13. Therefore, 91 is a composite number.