Q: Is 15,513,540 a Composite Number?

Why is 15,513,540 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 15,513,540 can be evenly divided by 1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 43 60 70 84 86 105 129 140 172 210 215 258 301 420 430 516 602 645 859 860 903 1,204 1,290 1,505 1,718 1,806 2,577 2,580 3,010 3,436 3,612 4,295 4,515 5,154 6,013 6,020 8,590 9,030 10,308 12,026 12,885 17,180 18,039 18,060 24,052 25,770 30,065 36,078 36,937 51,540 60,130 72,156 73,874 90,195 110,811 120,260 147,748 180,390 184,685 221,622 258,559 360,780 369,370 443,244 517,118 554,055 738,740 775,677 1,034,236 1,108,110 1,292,795 1,551,354 2,216,220 2,585,590 3,102,708 3,878,385 5,171,180 7,756,770 and 15,513,540, with no remainder.

Since 15,513,540 cannot be divided by just 1 and 15,513,540, 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).