Q: Is 321,860 a Prime Number?
A: No, 321,860 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 321860 can be evenly divided by 1 2 4 5 7 10 11 14 19 20 22 28 35 38 44 55 70 76 77 95 110 121 133 140 154 190 209 220 242 266 308 380 385 418 484 532 605 665 770 836 847 1,045 1,210 1,330 1,463 1,540 1,694 2,090 2,299 2,420 2,660 2,926 3,388 4,180 4,235 4,598 5,852 7,315 8,470 9,196 11,495 14,630 16,093 16,940 22,990 29,260 32,186 45,980 64,372 80,465 160,930 and 321,860, with no remainder.
Since 321,860 cannot be divided by just 1 and 321,860, it is not a prime number.