Q: Is 491,568 a Prime Number?
A: No, 491,568 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 491568 can be evenly divided by 1 2 3 4 6 7 8 11 12 14 16 19 21 22 24 28 33 38 42 44 48 49 56 57 66 76 77 84 88 98 112 114 132 133 147 152 154 168 176 196 209 228 231 264 266 294 304 308 336 392 399 418 456 462 528 532 539 588 616 627 784 798 836 912 924 931 1,064 1,078 1,176 1,232 1,254 1,463 1,596 1,617 1,672 1,848 1,862 2,128 2,156 2,352 2,508 2,793 2,926 3,192 3,234 3,344 3,696 3,724 4,312 4,389 5,016 5,586 5,852 6,384 6,468 7,448 8,624 8,778 10,032 10,241 11,172 11,704 12,936 14,896 17,556 20,482 22,344 23,408 25,872 30,723 35,112 40,964 44,688 61,446 70,224 81,928 122,892 163,856 245,784 and 491,568, with no remainder.
Since 491,568 cannot be divided by just 1 and 491,568, it is not a prime number.