Q: Is 4,200,003 a Prime Number?
A: No, 4,200,003 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 4200003 can be evenly divided by 1 3 9 17 51 97 153 283 291 849 873 1,649 2,547 4,811 4,947 14,433 14,841 27,451 43,299 82,353 247,059 466,667 1,400,001 and 4,200,003, with no remainder.
Since 4,200,003 cannot be divided by just 1 and 4,200,003, it is not a prime number.