Q: Is 428,043 a Prime Number?
A: No, 428,043 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 428043 can be evenly divided by 1 3 7 11 17 21 33 51 77 109 119 187 231 327 357 561 763 1,199 1,309 1,853 2,289 3,597 3,927 5,559 8,393 12,971 20,383 25,179 38,913 61,149 142,681 and 428,043, with no remainder.
Since 428,043 cannot be divided by just 1 and 428,043, it is not a prime number.