Prime numbers have rwo facrors
1 is neither a prime nor a composite number because it has only one factor (itself (1)). The definition of a prime number is a number that has the factor of one and itself, so one is not prime. The definition of a composite number is a number that has more than 2 factors, so one is not composite. One is a special number.
A number by which another is exactly divisible.
All numbers have factors. Some factors are prime numbers, some are composite numbers. A factor that is a composite number is a composite factor.
The only composite factor of 21 is 21.
63 is composite.
Prime numbers have two factors.
1 is neither a prime nor a composite number because it has only one factor (itself (1)). The definition of a prime number is a number that has the factor of one and itself, so one is not prime. The definition of a composite number is a number that has more than 2 factors, so one is not composite. One is a special number.
A number by which another is exactly divisible.
A composite factor is a factor that is a composite number, as opposed to a prime factor which is a factor that is a prime number.
Which of the following is a composite number between 57,47,17,2
Yes.
Anything that isn't 1, 5, 11, 55
A composite factor is a factor that is a composite number, as opposed to a prime factor which is a factor that is a prime number.
Since 160 is a composite number, it would be a composite factor.
To prove whether a number is composite, factor it. A number having any factor besides 1 and itself is composite.
You could try dividing by composite numbers but the number that you are testing is divisible by a composite number, then it will be divisible by a prime factor of that composite number and that prime factor will be smaller. It is always easier to work with smaller numbers.
It is another composite number.