Q: Is 278,823,825 a Composite Number?

Why is 278,823,825 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 278,823,825 can be evenly divided by 1 3 5 7 9 15 21 23 25 35 43 45 63 69 75 105 115 129 161 175 179 207 215 225 301 315 345 387 483 525 537 575 645 805 895 903 989 1,035 1,075 1,253 1,449 1,505 1,575 1,611 1,725 1,935 2,415 2,685 2,709 2,967 3,225 3,759 4,025 4,117 4,475 4,515 4,945 5,175 6,265 6,923 7,245 7,525 7,697 8,055 8,901 9,675 11,277 12,075 12,351 13,425 13,545 14,835 18,795 20,585 20,769 22,575 23,091 24,725 28,819 31,325 34,615 36,225 37,053 38,485 40,275 44,505 53,879 56,385 61,755 62,307 67,725 69,273 74,175 86,457 93,975 102,925 103,845 115,455 144,095 161,637 173,075 177,031 185,265 192,425 222,525 259,371 269,395 281,925 308,775 311,535 346,365 432,285 484,911 519,225 531,093 577,275 720,475 808,185 885,155 926,325 1,239,217 1,296,855 1,346,975 1,557,675 1,593,279 1,731,825 2,161,425 2,424,555 2,655,465 3,717,651 4,040,925 4,425,775 6,196,085 6,484,275 7,966,395 11,152,953 12,122,775 13,277,325 18,588,255 30,980,425 39,831,975 55,764,765 92,941,275 and 278,823,825, with no remainder.

Since 278,823,825 cannot be divided by just 1 and 278,823,825, 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).