Q: Is 2,318,421 a Prime Number?
A: No, 2,318,421 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 2318421 can be evenly divided by 1 3 7 21 113 339 791 977 2,373 2,931 6,839 20,517 110,401 331,203 772,807 and 2,318,421, with no remainder.
Since 2,318,421 cannot be divided by just 1 and 2,318,421, it is not a prime number.