Q: Is 42,581 a Prime Number?
A: No, 42,581 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 42581 can be evenly divided by 1 7 11 49 77 79 539 553 869 3,871 6,083 and 42,581, with no remainder.
Since 42,581 cannot be divided by just 1 and 42,581, it is not a prime number.