Q: Is 309,720 a Prime Number?
A: No, 309,720 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 309720 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 20 24 29 30 40 58 60 87 89 116 120 145 174 178 232 267 290 348 356 435 445 534 580 696 712 870 890 1,068 1,160 1,335 1,740 1,780 2,136 2,581 2,670 3,480 3,560 5,162 5,340 7,743 10,324 10,680 12,905 15,486 20,648 25,810 30,972 38,715 51,620 61,944 77,430 103,240 154,860 and 309,720, with no remainder.
Since 309,720 cannot be divided by just 1 and 309,720, it is not a prime number.