All numbers that have exactly two factors are prime numbers whereas composite numbers have more than two factors.
Prime numbers have exactly two numbers. There is theoretically an infinite number of them.
Square numbers have an odd number of factors.
Prime numbers like 2, 3, 5 and 7
4, 9, 25 and 49 They are squares of prime numbers.
64
3, 5 and 7
There are an infinite number of integers with "only 7 factors". Any number which is the product of exactly 7 prime numbers.
Numbers with exactly 7 factors are of the form pqr, where p, q, and r are distinct prime numbers. To find numbers with 7 factors, you need to look for numbers that can be expressed as the product of three different prime numbers.
Numbers with exactly three factors are squares of prime numbers.
Squares of prime numbers have exactly three factors.
2,3 and 7
All numbers that are the square of primes have exactly 3 factors.
All numbers that have exactly two factors are prime numbers whereas composite numbers have more than two factors.
Prime numbers have exactly two factors.All prime numbers have only 2 factors whereas composite numbers have more than 2 factors
1, 2, 3, 5, and 7
Prime numbers are the numbers that have exactly two factors.Prime numbers have only two factors, the number one and themselves.