Q: Is 65,421 a Prime Number?
A: No, 65,421 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 65421 can be evenly divided by 1 3 9 27 2,423 7,269 21,807 and 65,421, with no remainder.
Since 65,421 cannot be divided by just 1 and 65,421, it is not a prime number.