The square of any prime number has exactly three factors: 22, 32, 52, etc.
I belive it is 4. The factors of 4 are 1,4, and 2.
There are an infinite number of them. 8 has three prime factors, 30 is the first with three distinct prime factors.
Well, If we looked at this way: (224) = 16777216, so this number has exactly 24 factors. (324) = 282429536481, so this number has exactly 24 factors. (510)(210)(34) = 810000000000, so this number has exactly 24 factors.
A number that has exactly two (positive) factors is called a prime number. For instance, the only factors of 7 are 1 and 7.
A number has exactly three factors if and only if it is the square of a prime number.
The number 9: factors are 9, 3, and 1.
The smallest number that has exactly three factors is 4.
All prime squares have exactly three factors.49 has exactly three factors: 1, 7, and 49.
There are an infinite number of them. 8 has three prime factors, 30 is the first with three distinct prime factors.
30
625
4? the factors of 4 are 1,4 and 2
Numbers with three factors are squares of primes: 4, 9, 25
By definition, a prime number has exactly two factors. So, there are no prime numbers with exactly three factors.
The square of any prime number has exactly three factors: 22, 32, 52, etc.
9 The three factors are 1, 3, and 9. 9 The three factors are 1, 3, and 9.