Like 21? Prime numbers.
It is called unity.
a prime factor
Composite
prime * * * * * No, the only number with just one factor is 1. Each prime has TWO factors: 1 and the prime itself.
Normal. When a number has more than two factors, it's called composite.
Multiplicand times multiplier equals product.
A number with more than one factor is normal, since all numbers except 0 and 1 have more than one factor. A number with more than two factors is composite.
The number is prime.
The first number is a multiple of the second. The second number is a factor of the first.
One is a factor of every number.
This would be called a "factor". A number may be made by multiplying two or more other numbers together. The numbers that are multiplied together are called factors of the final number.
It is called a factor