Q: Is 671,216 a Prime Number?
A: No, 671,216 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 671216 can be evenly divided by 1 2 4 7 8 13 14 16 26 28 52 56 91 104 112 182 208 364 461 728 922 1,456 1,844 3,227 3,688 5,993 6,454 7,376 11,986 12,908 23,972 25,816 41,951 47,944 51,632 83,902 95,888 167,804 335,608 and 671,216, with no remainder.
Since 671,216 cannot be divided by just 1 and 671,216, it is not a prime number.