Q: Is 8,221,661 a Prime Number?
A: No, 8,221,661 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 8221661 can be evenly divided by 1 7 19 49 133 931 8,831 61,817 167,789 432,719 1,174,523 and 8,221,661, with no remainder.
Since 8,221,661 cannot be divided by just 1 and 8,221,661, it is not a prime number.