Q: Is 31,310,020 a Composite Number?

Why is 31,310,020 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 31,310,020 can be evenly divided by 1 2 4 5 7 10 14 20 28 35 43 49 70 86 98 140 172 196 215 245 301 430 490 602 743 860 980 1,204 1,486 1,505 2,107 2,972 3,010 3,715 4,214 5,201 6,020 7,430 8,428 10,402 10,535 14,860 20,804 21,070 26,005 31,949 36,407 42,140 52,010 63,898 72,814 104,020 127,796 145,628 159,745 182,035 223,643 319,490 364,070 447,286 638,980 728,140 894,572 1,118,215 1,565,501 2,236,430 3,131,002 4,472,860 6,262,004 7,827,505 15,655,010 and 31,310,020, with no remainder.

Since 31,310,020 cannot be divided by just 1 and 31,310,020, 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).