Q: Is 143,241 a Prime Number?
A: No, 143,241 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 143241 can be evenly divided by 1 3 7 19 21 57 133 359 399 1,077 2,513 6,821 7,539 20,463 47,747 and 143,241, with no remainder.
Since 143,241 cannot be divided by just 1 and 143,241, it is not a prime number.