To determine if 1560 is a prime number or a composite number, we simply look at the factors for 1560.
If the factors of 1560 are only 1560 and 1, then we know that 1560 is a prime number. Otherwise, 1560 is a composite number.
To explain better, if 1560 is only divisible by 1 and 1560, then it is a prime number, and if 1560 is divisible by more than 1560 and 1, then it is a composite number.
The factors of 1560 are as follows:
1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560
Therefore, since 1560 is divisible by more than one and itself, the answer to the
question "Is 1560 prime or composite?" is highlighted in blue below.
composite
Is 1561 prime or composite?
OK. Now you know that 1560 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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