Q: Is 72,777,705 a Composite Number?

Why is 72,777,705 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 72,777,705 can be evenly divided by 1 3 5 7 11 13 15 21 33 35 37 39 55 65 77 91 105 111 131 143 165 185 195 231 259 273 385 393 407 429 455 481 555 655 715 777 917 1,001 1,155 1,221 1,295 1,365 1,441 1,443 1,703 1,965 2,035 2,145 2,405 2,751 2,849 3,003 3,367 3,885 4,323 4,585 4,847 5,005 5,109 5,291 6,105 7,205 7,215 8,515 8,547 10,087 10,101 11,921 13,755 14,245 14,541 15,015 15,873 16,835 18,733 21,615 24,235 25,545 26,455 30,261 33,929 35,763 37,037 42,735 50,435 50,505 53,317 56,199 59,605 63,011 72,705 79,365 93,665 101,787 111,111 131,131 151,305 159,951 169,645 178,815 185,185 189,033 266,585 280,995 315,055 373,219 393,393 441,077 508,935 555,555 655,655 693,121 799,755 945,165 1,119,657 1,323,231 1,866,095 1,966,965 2,079,363 2,205,385 3,465,605 4,851,847 5,598,285 6,616,155 10,396,815 14,555,541 24,259,235 and 72,777,705, with no remainder.

Since 72,777,705 cannot be divided by just 1 and 72,777,705, 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).