Q: Is 1,321,528 a Prime Number?
A: No, 1,321,528 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 1321528 can be evenly divided by 1 2 4 8 13 26 52 97 104 131 194 262 388 524 776 1,048 1,261 1,703 2,522 3,406 5,044 6,812 10,088 12,707 13,624 25,414 50,828 101,656 165,191 330,382 660,764 and 1,321,528, with no remainder.
Since 1,321,528 cannot be divided by just 1 and 1,321,528, it is not a prime number.