Q: Is 3,121,404 a Prime Number?
A: No, 3,121,404 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 3121404 can be evenly divided by 1 2 3 4 6 11 12 13 17 22 26 33 34 39 44 51 52 66 68 78 102 107 132 143 156 187 204 214 221 286 321 374 428 429 442 561 572 642 663 748 858 884 1,122 1,177 1,284 1,326 1,391 1,716 1,819 2,244 2,354 2,431 2,652 2,782 3,531 3,638 4,173 4,708 4,862 5,457 5,564 7,062 7,276 7,293 8,346 9,724 10,914 14,124 14,586 15,301 16,692 20,009 21,828 23,647 29,172 30,602 40,018 45,903 47,294 60,027 61,204 70,941 80,036 91,806 94,588 120,054 141,882 183,612 240,108 260,117 283,764 520,234 780,351 1,040,468 1,560,702 and 3,121,404, with no remainder.
Since 3,121,404 cannot be divided by just 1 and 3,121,404, it is not a prime number.