Q: Is 671,814 a Prime Number?
A: No, 671,814 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 671814 can be evenly divided by 1 2 3 6 9 11 13 18 22 26 27 29 33 39 54 58 66 78 81 87 99 117 143 162 174 198 234 261 286 297 319 351 377 429 522 594 638 702 754 783 858 891 957 1,053 1,131 1,287 1,566 1,782 1,914 2,106 2,262 2,349 2,574 2,871 3,393 3,861 4,147 4,698 5,742 6,786 7,722 8,294 8,613 10,179 11,583 12,441 17,226 20,358 23,166 24,882 25,839 30,537 37,323 51,678 61,074 74,646 111,969 223,938 335,907 and 671,814, with no remainder.
Since 671,814 cannot be divided by just 1 and 671,814, it is not a prime number.