To determine if 1000 is a prime number or a composite number, we simply look at the factors for 1000.
If the factors of 1000 are only 1000 and 1, then we know that 1000 is a prime number. Otherwise, 1000 is a composite number.
To explain better, if 1000 is only divisible by 1 and 1000, then it is a prime number, and if 1000 is divisible by more than 1000 and 1, then it is a composite number.
The factors of 1000 are as follows:
1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 1000
Therefore, since 1000 is divisible by more than one and itself, the answer to the
question "Is 1000 prime or composite?" is highlighted in blue below.
composite
Is 1001 prime or composite?
OK. Now you know that 1000 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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