Q: Is 61,721 a Prime Number?
A: No, 61,721 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 61721 can be evenly divided by 1 11 31 181 341 1,991 5,611 and 61,721, with no remainder.
Since 61,721 cannot be divided by just 1 and 61,721, it is not a prime number.