Q: Is 280,280 a Composite Number?

Why is 280,280 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 280,280 can be evenly divided by 1 2 4 5 7 8 10 11 13 14 20 22 26 28 35 40 44 49 52 55 56 65 70 77 88 91 98 104 110 130 140 143 154 182 196 220 245 260 280 286 308 364 385 392 440 455 490 520 539 572 616 637 715 728 770 910 980 1,001 1,078 1,144 1,274 1,430 1,540 1,820 1,960 2,002 2,156 2,548 2,695 2,860 3,080 3,185 3,640 4,004 4,312 5,005 5,096 5,390 5,720 6,370 7,007 8,008 10,010 10,780 12,740 14,014 20,020 21,560 25,480 28,028 35,035 40,040 56,056 70,070 140,140 and 280,280, with no remainder.

Since 280,280 cannot be divided by just 1 and 280,280, 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).