Q: Is 428,000 a Prime Number?
A: No, 428,000 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 428000 can be evenly divided by 1 2 4 5 8 10 16 20 25 32 40 50 80 100 107 125 160 200 214 250 400 428 500 535 800 856 1,000 1,070 1,712 2,000 2,140 2,675 3,424 4,000 4,280 5,350 8,560 10,700 13,375 17,120 21,400 26,750 42,800 53,500 85,600 107,000 214,000 and 428,000, with no remainder.
Since 428,000 cannot be divided by just 1 and 428,000, it is not a prime number.