Q: Is 505,660 a Prime Number?
A: No, 505,660 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 505660 can be evenly divided by 1 2 4 5 10 20 131 193 262 386 524 655 772 965 1,310 1,930 2,620 3,860 25,283 50,566 101,132 126,415 252,830 and 505,660, with no remainder.
Since 505,660 cannot be divided by just 1 and 505,660, it is not a prime number.