Q: Is 1,281,560 a Composite Number?

Why is 1,281,560 a composite number?

A composite number is a number that can be divided evenly by more numbers than 1 and itself. It is the opposite of a prime number.

The number 1,281,560 can be evenly divided by 1 2 4 5 7 8 10 14 20 23 28 35 40 46 56 70 92 115 140 161 184 199 230 280 322 398 460 644 796 805 920 995 1,288 1,393 1,592 1,610 1,990 2,786 3,220 3,980 4,577 5,572 6,440 6,965 7,960 9,154 11,144 13,930 18,308 22,885 27,860 32,039 36,616 45,770 55,720 64,078 91,540 128,156 160,195 183,080 256,312 320,390 640,780 and 1,281,560, with no remainder.

Since 1,281,560 cannot be divided by just 1 and 1,281,560, it is a composite number.

More Examples

• All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).