Any Prime number (greater than 3) to the 4th power has 5 factors, like 625 and 2401.
Chat with our AI personalities
Each of the 25 prime numbers from 1 to 100 has exactly two factors, 1 and the number itself. The other 75 numbers from 1 to 100 are not prime numbers because none of them have exactly two factors.
4, 9, 25 and 49.
Excluding 1, a factor of all whole numbers, use the 1st 7 prime numbers greater than 100 and multiply them together.101 x 103 x 107 x etcorAny prime number (except 2) to the 6th power has exactly seven factors, like 729 and 15625.
In that range, only 100 has exactly 9 factors.
prime squares 4, 9, 25, 49