Q: Is 857,000 a Prime Number?
A: No, 857,000 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 857000 can be evenly divided by 1 2 4 5 8 10 20 25 40 50 100 125 200 250 500 857 1,000 1,714 3,428 4,285 6,856 8,570 17,140 21,425 34,280 42,850 85,700 107,125 171,400 214,250 428,500 and 857,000, with no remainder.
Since 857,000 cannot be divided by just 1 and 857,000, it is not a prime number.