Q: Is 1,421,763 a Prime Number?
A: No, 1,421,763 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 1421763 can be evenly divided by 1 3 7 21 79 237 553 857 1,659 2,571 5,999 17,997 67,703 203,109 473,921 and 1,421,763, with no remainder.
Since 1,421,763 cannot be divided by just 1 and 1,421,763, it is not a prime number.