Q: Is 320,580 a Prime Number?
A: No, 320,580 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 320580 can be evenly divided by 1 2 3 4 5 6 9 10 12 13 15 18 20 26 30 36 39 45 52 60 65 78 90 117 130 137 156 180 195 234 260 274 390 411 468 548 585 685 780 822 1,170 1,233 1,370 1,644 1,781 2,055 2,340 2,466 2,740 3,562 4,110 4,932 5,343 6,165 7,124 8,220 8,905 10,686 12,330 16,029 17,810 21,372 24,660 26,715 32,058 35,620 53,430 64,116 80,145 106,860 160,290 and 320,580, with no remainder.
Since 320,580 cannot be divided by just 1 and 320,580, it is not a prime number.