Q: Is 21,023,310 a Composite Number?

Why is 21,023,310 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 21,023,310 can be evenly divided by 1 2 3 5 6 7 10 11 14 15 19 21 22 30 33 35 38 42 55 57 66 70 77 95 105 110 114 133 154 165 190 209 210 231 266 285 330 385 399 418 462 479 570 627 665 770 798 958 1,045 1,155 1,254 1,330 1,437 1,463 1,995 2,090 2,310 2,395 2,874 2,926 3,135 3,353 3,990 4,389 4,790 5,269 6,270 6,706 7,185 7,315 8,778 9,101 10,059 10,538 14,370 14,630 15,807 16,765 18,202 20,118 21,945 26,345 27,303 31,614 33,530 36,883 43,890 45,505 50,295 52,690 54,606 63,707 73,766 79,035 91,010 100,111 100,590 110,649 127,414 136,515 158,070 184,415 191,121 200,222 221,298 273,030 300,333 318,535 368,830 382,242 500,555 553,245 600,666 637,070 700,777 955,605 1,001,110 1,106,490 1,401,554 1,501,665 1,911,210 2,102,331 3,003,330 3,503,885 4,204,662 7,007,770 10,511,655 and 21,023,310, with no remainder.

Since 21,023,310 cannot be divided by just 1 and 21,023,310, 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).