Q: Is 505,400 a Prime Number?
A: No, 505,400 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 505400 can be evenly divided by 1 2 4 5 7 8 10 14 19 20 25 28 35 38 40 50 56 70 76 95 100 133 140 152 175 190 200 266 280 350 361 380 475 532 665 700 722 760 950 1,064 1,330 1,400 1,444 1,805 1,900 2,527 2,660 2,888 3,325 3,610 3,800 5,054 5,320 6,650 7,220 9,025 10,108 12,635 13,300 14,440 18,050 20,216 25,270 26,600 36,100 50,540 63,175 72,200 101,080 126,350 252,700 and 505,400, with no remainder.
Since 505,400 cannot be divided by just 1 and 505,400, it is not a prime number.