you call it a prime number
If you mean what do you call a number with only 1 and itself as factors, then it is a prime number.
One.By definition numbers are:prime if they have only 2 distinct factors (namely 1 and the number itself);composite if they have 3 or more distinct factorsThe important thing to note is the word distinct. The number 1 has only 1 distinct factor, namely 1; thus it is neither a prime (the first prime number is 2) nor composite.
It is a composite number and a number with only two factors is a prime number
prime number if it only has less than 2 factors
A prime number has only two factors, namely 1 and itself. For example, 5 has only two factors, 1 and 5(itself). So it is a prime number. A composite number can have many factors, that is it can be divided by more than two numbers. For example, 36 can be divided by 1,2,3,4,6,9,12,18 and 36. Thus it is a composite number.
a # that has exactly 2 factors is called a prime number, an example of a prime number is 17 because it is odd and it only has 2 factors, 17= 1 and itself
A number that has only two factors is called a prime. The only factors of a prime are 1 and the number itself.
A prime number. Strictly speaking, a prime number is required to have exactly two distinct factors, namely 1 and itself. The number 1 has only one [distinct] factor (1 = 1 x 1 - only 1 factor: 1) and so 1 is not a prime number; the first prime number is 2 (2 = 1 x 2 - two factors: 1 & 2).
A prime number
All numbers greater than 1 have at least two factors. That is because the number can always divide by 1 and itself. If a number has only 2 factors, it is called a prime number. Otherwise, it is called a composite number.
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