Q: Is 491,000 a Prime Number?
A: No, 491,000 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 491000 can be evenly divided by 1 2 4 5 8 10 20 25 40 50 100 125 200 250 491 500 982 1,000 1,964 2,455 3,928 4,910 9,820 12,275 19,640 24,550 49,100 61,375 98,200 122,750 245,500 and 491,000, with no remainder.
Since 491,000 cannot be divided by just 1 and 491,000, it is not a prime number.