To determine if 258 is a prime number or a composite number, we simply look at the factors for 258.
If the factors of 258 are only 258 and 1, then we know that 258 is a prime number. Otherwise, 258 is a composite number.
To explain better, if 258 is only divisible by 1 and 258, then it is a prime number, and if 258 is divisible by more than 258 and 1, then it is a composite number.
The factors of 258 are as follows:
1, 2, 3, 6, 43, 86, 129, 258
Therefore, since 258 is divisible by more than one and itself, the answer to the
question "Is 258 prime or composite?" is highlighted in blue below.
composite
Is 259 prime or composite?
OK. Now you know that 258 is a composite number. Use our logic above and see if
you can figure out if the next number on our list is prime or composite before you check your answer.
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