To determine if 2129 is a prime number or a composite number, we simply look at the factors for 2129.
If the factors of 2129 are only 2129 and 1, then we know that 2129 is a prime number. Otherwise, 2129 is a composite number.
To explain better, if 2129 is only divisible by 1 and 2129, then it is a prime number, and if 2129 is divisible by more than 2129 and 1, then it is a composite number.
The factors of 2129 are as follows:
1, 2129
Therefore, since 2129 is divisible by only one and itself, the answer to the
question "Is 2129 prime or composite?" is highlighted in blue below.
prime
Is 2130 prime or composite?
OK. Now you know that 2129 is a prime 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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