Q: Is 321,880 a Prime Number?
A: No, 321,880 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 321880 can be evenly divided by 1 2 4 5 8 10 13 20 26 40 52 65 104 130 260 520 619 1,238 2,476 3,095 4,952 6,190 8,047 12,380 16,094 24,760 32,188 40,235 64,376 80,470 160,940 and 321,880, with no remainder.
Since 321,880 cannot be divided by just 1 and 321,880, it is not a prime number.