1 and 2
They are called common factors when they are the same for two or more numbers. They are factors that are common to both number.
No two numbers have the exact same factors.
Prime numbers have two factors. Prime squares have three factors. Square numbers have an odd number of factors but that number varies.
187 will have the same number of factors no matter what you do to it.
A perfect square has an odd number of distinct factors, because two of its factors are the same number.
A prime number is a positive integer that has exactly two different factors: 1 and itself. This is why 1 is not a prime number: it has the factors 1 and itself, but they are the same - it does not have exactly two different factors.
Common factors are factors that are the same for two or more numbers.
Every number except the number 1 has at least two factors, 1 and the number itself. Prime numbers have exactly two factors and composite numbers have more than two factors. All even numbers except the number 2 are composite numbers and have more than two factors. The number 2 is prime and its only factors are 1 and 2.
1 and the number itself. These two are always factors.
There is no prime number from one to a hundred that has more factors than any other prime number. By definition, a prime number has exactly two factors, 1 and itself. The number 1 has only one factor - itself. All prime numbers have exactly the same number of factors - two. Composite numbers have more than two factors.
Common Factors
Prime numbers are the numbers that have exactly two factors.Prime numbers have only two factors, the number one and themselves.