Q: Is 4,000,661 a Prime Number?
A: No, 4,000,661 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 4000661 can be evenly divided by 1 7 17 119 33,619 235,333 571,523 and 4,000,661, with no remainder.
Since 4,000,661 cannot be divided by just 1 and 4,000,661, it is not a prime number.