Q: Is 319,840 a Prime Number?
A: No, 319,840 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 319840 can be evenly divided by 1 2 4 5 8 10 16 20 32 40 80 160 1,999 3,998 7,996 9,995 15,992 19,990 31,984 39,980 63,968 79,960 159,920 and 319,840, with no remainder.
Since 319,840 cannot be divided by just 1 and 319,840, it is not a prime number.