To determine if 1955 is a prime number or a composite number, we simply look at the factors for 1955.
If the factors of 1955 are only 1955 and 1, then we know that 1955 is a prime number. Otherwise, 1955 is a composite number.
To explain better, if 1955 is only divisible by 1 and 1955, then it is a prime number, and if 1955 is divisible by more than 1955 and 1, then it is a composite number.
The factors of 1955 are as follows:
1, 5, 17, 23, 85, 115, 391, 1955
Therefore, since 1955 is divisible by more than one and itself, the answer to the
question "Is 1955 prime or composite?" is highlighted in blue below.
composite
Is 1956 prime or composite?
OK. Now you know that 1955 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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