To determine if 1840 is a prime number or a composite number, we simply look at the factors for 1840.
If the factors of 1840 are only 1840 and 1, then we know that 1840 is a prime number. Otherwise, 1840 is a composite number.
To explain better, if 1840 is only divisible by 1 and 1840, then it is a prime number, and if 1840 is divisible by more than 1840 and 1, then it is a composite number.
The factors of 1840 are as follows:
1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 368, 460, 920, 1840
Therefore, since 1840 is divisible by more than one and itself, the answer to the
question "Is 1840 prime or composite?" is highlighted in blue below.
composite
Is 1841 prime or composite?
OK. Now you know that 1840 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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