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Q: What are numbers with only 3 factors called?

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The answer depends on what the numbers have more of when 3 factors!

Squares of primes.

The way to be sure you have one of these is to take any three distinct prime numbers and multiply them. Those three prime numbers are then the only factors the product can have. An example is the number 30, which has factors of 2, 3 and 5.

1 has only 1 factor (1) 2 has only 2 factors (1 and 2) 3 has only 2 factors (1 and 3) 4 has only 3 factors (1, 2, and 4) 6 has 4 factors (1, 2, 3, and 6) 8 has 4 factors (1, 2, 4, and 8)

All numbers that are the square of primes have exactly 3 factors.

Related questions

Numbers with 3 or 5 factors are called square numbers.

The answer depends on what the numbers have more of when 3 factors!

numbers such as 9 and 25. factors of 9 are 1, 9, and 3 factors of 25 are 1, 25, and 5

Squares of primes.

2 and 3 are the prime factors of 36. Of the factors of 36, 2 and 3 are the only prime numbers.

Of the numbers from 1 to 30, only 30 has all three of those numbers as factors.

1,2,3,4,5,7,9,11,13,15,16,17,19,22,23,26,27,28,29,31,32,33,34,37,39,41,43,44,47,49

Out of the list of factors of 36, 2 and 3 are the only prime numbers.

3, 5 and 7 are prime numbers. Their only factors are one and themselves.

All composite numbers have more than two factors whereas prime numbers have only two factors

Prime numbers are numbers that have only 2 factors, 1 and it's self. Composite numbers are the opposite, they have 3 or more factors.

No, prime numbers have only two factors: 1 and itself. Composite numbers have at least 3 factors.