Q: Is 309,840 a Prime Number?
A: No, 309,840 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 309840 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 16 20 24 30 40 48 60 80 120 240 1,291 2,582 3,873 5,164 6,455 7,746 10,328 12,910 15,492 19,365 20,656 25,820 30,984 38,730 51,640 61,968 77,460 103,280 154,920 and 309,840, with no remainder.
Since 309,840 cannot be divided by just 1 and 309,840, it is not a prime number.