On the concepts of multiple, factor, even number, odd number, prime number and composite number

On the concepts of multiple, factor, even number, odd number, prime number and composite number

Prime number = prime number, which is only divisible by 1 and itself, such as: 2,3,5,7, and so on. There are many composite numbers that can be divisible by other numbers besides 1 and itself, which is more, such as 4,6,8,10, and so on. Even numbers are composite except 2. Of course, odd numbers can also be composite, and even numbers can be divisible by 2