To determine if 1869 is a prime number or a composite number, we simply look at the factors for 1869.
If the factors of 1869 are only 1869 and 1, then we know that 1869 is a prime number. Otherwise, 1869 is a composite number.
To explain better, if 1869 is only divisible by 1 and 1869, then it is a prime number, and if 1869 is divisible by more than 1869 and 1, then it is a composite number.
The factors of 1869 are as follows:
1, 3, 7, 21, 89, 267, 623, 1869
Therefore, since 1869 is divisible by more than one and itself, the answer to the
question "Is 1869 prime or composite?" is highlighted in blue below.
composite
Is 1870 prime or composite?
OK. Now you know that 1869 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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