A composite number.
a composite number
A composite number has three or more factors.
If a number has three factors, it's a perfect square. One of those three factors (apart from 1 and the number itself) would be the square root.
Prime numbers have two factors. Prime squares have three factors. Square numbers have an odd number of factors but that number varies.
No, no prime number has proper factors.
A composite number has three or more factors.
A composite number.
a composite number
That's a composite number.
A composite number has three or more factors.
A compound number.
A composite number is a number that is not a prime number, ie it has more than two distinct factors. The factors of 25 are 1, 5, 25 - three distinct factors.
The number 9: factors are 9, 3, and 1.
Prime numbers have two and only two factors. Composite numbers have three or more.
Because it has more than two factors.
The smallest number that has exactly three factors is 4.
If a number has three factors, it's a perfect square. One of those three factors (apart from 1 and the number itself) would be the square root.