Q: Is 321,480 a Composite Number?

Why is 321,480 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 321,480 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 18 19 20 24 30 36 38 40 45 47 57 60 72 76 90 94 95 114 120 141 152 171 180 188 190 228 235 282 285 342 360 376 380 423 456 470 564 570 684 705 760 846 855 893 940 1,128 1,140 1,368 1,410 1,692 1,710 1,786 1,880 2,115 2,280 2,679 2,820 3,384 3,420 3,572 4,230 4,465 5,358 5,640 6,840 7,144 8,037 8,460 8,930 10,716 13,395 16,074 16,920 17,860 21,432 26,790 32,148 35,720 40,185 53,580 64,296 80,370 107,160 160,740 and 321,480, with no remainder.

Since 321,480 cannot be divided by just 1 and 321,480, 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).