Q: Is 290,421 a Prime Number?
A: No, 290,421 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 290421 can be evenly divided by 1 3 9 23 61 69 183 207 529 549 1,403 1,587 4,209 4,761 12,627 32,269 96,807 and 290,421, with no remainder.
Since 290,421 cannot be divided by just 1 and 290,421, it is not a prime number.