Q: Is 1,321,530 a Prime Number?
A: No, 1,321,530 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 1321530 can be evenly divided by 1 2 3 5 6 7 10 14 15 21 29 30 31 35 42 49 58 62 70 87 93 98 105 145 147 155 174 186 203 210 217 245 290 294 310 406 434 435 465 490 609 651 735 870 899 930 1,015 1,085 1,218 1,302 1,421 1,470 1,519 1,798 2,030 2,170 2,697 2,842 3,038 3,045 3,255 4,263 4,495 4,557 5,394 6,090 6,293 6,510 7,105 7,595 8,526 8,990 9,114 12,586 13,485 14,210 15,190 18,879 21,315 22,785 26,970 31,465 37,758 42,630 44,051 45,570 62,930 88,102 94,395 132,153 188,790 220,255 264,306 440,510 660,765 and 1,321,530, with no remainder.
Since 1,321,530 cannot be divided by just 1 and 1,321,530, it is not a prime number.