Q: Is 7,771,218 a Composite Number?

Why is 7,771,218 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 7,771,218 can be evenly divided by 1 2 3 6 7 13 14 21 26 39 42 43 78 86 91 129 182 258 273 301 331 546 559 602 662 903 993 1,118 1,677 1,806 1,986 2,317 3,354 3,913 4,303 4,634 6,951 7,826 8,606 11,739 12,909 13,902 14,233 23,478 25,818 28,466 30,121 42,699 60,242 85,398 90,363 99,631 180,726 185,029 199,262 298,893 370,058 555,087 597,786 1,110,174 1,295,203 2,590,406 3,885,609 and 7,771,218, with no remainder.

Since 7,771,218 cannot be divided by just 1 and 7,771,218, 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).