Q: Is 309,920 a Prime Number?
A: No, 309,920 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 309920 can be evenly divided by 1 2 4 5 8 10 13 16 20 26 32 40 52 65 80 104 130 149 160 208 260 298 416 520 596 745 1,040 1,192 1,490 1,937 2,080 2,384 2,980 3,874 4,768 5,960 7,748 9,685 11,920 15,496 19,370 23,840 30,992 38,740 61,984 77,480 154,960 and 309,920, with no remainder.
Since 309,920 cannot be divided by just 1 and 309,920, it is not a prime number.