To determine if 1830 is a prime number or a composite number, we simply look at the factors for 1830.
If the factors of 1830 are only 1830 and 1, then we know that 1830 is a prime number. Otherwise, 1830 is a composite number.
To explain better, if 1830 is only divisible by 1 and 1830, then it is a prime number, and if 1830 is divisible by more than 1830 and 1, then it is a composite number.
The factors of 1830 are as follows:
1, 2, 3, 5, 6, 10, 15, 30, 61, 122, 183, 305, 366, 610, 915, 1830
Therefore, since 1830 is divisible by more than one and itself, the answer to the
question "Is 1830 prime or composite?" is highlighted in blue below.
composite
Is 1831 prime or composite?
OK. Now you know that 1830 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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