Q: Is 6,721,671 a Prime Number?
A: No, 6,721,671 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 6721671 can be evenly divided by 1 3 11 33 121 363 18,517 55,551 203,687 611,061 2,240,557 and 6,721,671, with no remainder.
Since 6,721,671 cannot be divided by just 1 and 6,721,671, it is not a prime number.