Q: Is 1,777,545 a Composite Number?

Why is 1,777,545 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 1,777,545 can be evenly divided by 1 3 5 7 9 11 15 19 21 27 33 35 45 55 57 63 77 81 95 99 105 133 135 165 171 189 209 231 243 285 297 315 385 399 405 495 513 567 627 665 693 855 891 945 1,045 1,155 1,197 1,215 1,463 1,485 1,539 1,701 1,881 1,995 2,079 2,565 2,673 2,835 3,135 3,465 3,591 4,389 4,455 4,617 5,643 5,985 6,237 7,315 7,695 8,505 9,405 10,395 10,773 13,167 13,365 16,929 17,955 18,711 21,945 23,085 28,215 31,185 32,319 39,501 50,787 53,865 65,835 84,645 93,555 118,503 161,595 197,505 253,935 355,509 592,515 and 1,777,545, with no remainder.

Since 1,777,545 cannot be divided by just 1 and 1,777,545, 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).