Q: Is 1,621,098 a Prime Number?
A: No, 1,621,098 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 1621098 can be evenly divided by 1 2 3 6 9 18 113 226 339 678 797 1,017 1,594 2,034 2,391 4,782 7,173 14,346 90,061 180,122 270,183 540,366 810,549 and 1,621,098, with no remainder.
Since 1,621,098 cannot be divided by just 1 and 1,621,098, it is not a prime number.