Q: How many whole numbers less than 2010 have exactly three factors?

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4 and 9

890

The square of any prime number has exactly three factors: 22, 32, 52, etc.

They're called the "factors" of the given number.

Exactly the same way you do when they're all whole numbers, or there are more than three numbers, or they're a mixture of whole numbers and decimals: -- Add up all the numbers on the list. -- Divide the big sum by the number of items on the list.

Related questions

Factors are whole numbers that divide exactly into a whole number. These numbers have no remainder. Primes, on the other hand, have exactly two factors which are 1 and itself.

4 and 9

Any composite number. Examples: 4 and 9 . . . (three factors) 6, 8, and 10 . . . (four factors) 12 . . . (six factors) 60 . . . (twelve factors)

A prime number- the factors are 1 and itself. Composite numbers are numbers with more than 2 numbers.

A factor is a number or algebraic expression by which another is exactly divisible. Whole factors are whole numbers that are factors. In the equation 3 x 4 = 12, 3 and 4 are factors of 12.

9409.

A prime number has exactly two factors: itself and 1.

A whole number that has exactly two factors is called a prime number. There are several examples of prime numbers, such as 3, 5, 7, 11, 13, 17, and 19. These are just a few of the thousands of prime numbers.

That would be 1. The only factor of 1 is 1. All other whole numbers have at least two factors. Prime numbers have exactly two factors, while composite numbers have more than two factors.

All factors are whole numbers

The three greatest whole numbers less than 200 that each have an odd number of factors are 144, 169 and 196.

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