Q: Is 1,218,320 a Prime Number?
A: No, 1,218,320 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 1218320 can be evenly divided by 1 2 4 5 8 10 16 20 40 80 97 157 194 314 388 485 628 776 785 970 1,256 1,552 1,570 1,940 2,512 3,140 3,880 6,280 7,760 12,560 15,229 30,458 60,916 76,145 121,832 152,290 243,664 304,580 609,160 and 1,218,320, with no remainder.
Since 1,218,320 cannot be divided by just 1 and 1,218,320, it is not a prime number.