Explanation: By definition a prime number has only 2 factors – itself and 1. All other prime numbers are odd, and there are infinitely many prime numbers.
Is there a rule for prime numbers?
A prime number can be divided, without a remainder, only by itself and by 1. For example, 17 can be divided only by 17 and by 1. Some facts: The only even prime number is 2.
What is the smallest perfect number?
6
Perfect number, a positive integer that is equal to the sum of its proper divisors. The smallest perfect number is 6, which is the sum of 1, 2, and 3. Other perfect numbers are 28, 496, and 8,128.
Can a prime number be a multiple of another prime number?
douwdek0 found this answer helpful. No, by definition a prime number is one where the only factors are 1 and itself. If some prime number is a multiple of another number, then that other number is a factor of the prime number. But that would make it composite (non-prime)
Is there such a thing as a prime number?
No, by definition a prime number is one where the only factors are 1 and itself. If some prime number is a multiple of another number, then that other number is a factor of the prime number. But that would make it composite (non-prime) For example, the number 11 is prime. The only factors are 1 and itself.
Is there such thing as a composite prime number?
No, by definition a prime number is one where the only factors are 1 and itself. If some prime number is a multiple of another number, then that other number is a factor of the prime number. But that would make it composite (non-prime)
Can a number be a multiple of any other number?
Usually, a number is considered to be a multiple of another number only of there is an integer you can multiply the other number by in order to get the first number. If you allowed multiplication by non-integers, then every number would be a multiple of every other number except zero and the term “multiple” would be fairly useless.
