Q: Is 71,421 a Prime Number?
A: No, 71,421 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 71421 can be evenly divided by 1 3 7 19 21 57 133 179 399 537 1,253 3,401 3,759 10,203 23,807 and 71,421, with no remainder.
Since 71,421 cannot be divided by just 1 and 71,421, it is not a prime number.