Q: Is 505,000 a Prime Number?
A: No, 505,000 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 505000 can be evenly divided by 1 2 4 5 8 10 20 25 40 50 100 101 125 200 202 250 404 500 505 625 808 1,000 1,010 1,250 2,020 2,500 2,525 4,040 5,000 5,050 10,100 12,625 20,200 25,250 50,500 63,125 101,000 126,250 252,500 and 505,000, with no remainder.
Since 505,000 cannot be divided by just 1 and 505,000, it is not a prime number.