Q: Is 1,355,328 a Prime Number?
A: No, 1,355,328 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 1355328 can be evenly divided by 1 2 3 4 6 8 9 12 13 16 18 24 26 32 36 39 48 52 64 72 78 96 104 117 144 156 181 192 208 234 288 312 362 416 468 543 576 624 724 832 936 1,086 1,248 1,448 1,629 1,872 2,172 2,353 2,496 2,896 3,258 3,744 4,344 4,706 5,792 6,516 7,059 7,488 8,688 9,412 11,584 13,032 14,118 17,376 18,824 21,177 26,064 28,236 34,752 37,648 42,354 52,128 56,472 75,296 84,708 104,256 112,944 150,592 169,416 225,888 338,832 451,776 677,664 and 1,355,328, with no remainder.
Since 1,355,328 cannot be divided by just 1 and 1,355,328, it is not a prime number.