Q: Is 5,021,721 a Prime Number?
A: No, 5,021,721 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 5021721 can be evenly divided by 1 3 9 31 41 93 123 279 369 439 1,271 1,317 3,813 3,951 11,439 13,609 17,999 40,827 53,997 122,481 161,991 557,969 1,673,907 and 5,021,721, with no remainder.
Since 5,021,721 cannot be divided by just 1 and 5,021,721, it is not a prime number.