Q: Is 21,343,770 a Composite Number?

Why is 21,343,770 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 21,343,770 can be evenly divided by 1 2 3 5 6 7 9 10 14 15 18 21 23 27 30 35 42 45 46 54 63 69 70 90 105 115 126 135 138 161 189 207 210 230 270 315 322 345 378 414 483 491 621 630 690 805 945 966 982 1,035 1,242 1,449 1,473 1,610 1,890 2,070 2,415 2,455 2,898 2,946 3,105 3,437 4,347 4,419 4,830 4,910 6,210 6,874 7,245 7,365 8,694 8,838 10,311 11,293 13,257 14,490 14,730 17,185 20,622 21,735 22,095 22,586 26,514 30,933 33,879 34,370 43,470 44,190 51,555 56,465 61,866 66,285 67,758 79,051 92,799 101,637 103,110 112,930 132,570 154,665 158,102 169,395 185,598 203,274 237,153 304,911 309,330 338,790 395,255 463,995 474,306 508,185 609,822 711,459 790,510 927,990 1,016,370 1,185,765 1,422,918 1,524,555 2,134,377 2,371,530 3,049,110 3,557,295 4,268,754 7,114,590 10,671,885 and 21,343,770, with no remainder.

Since 21,343,770 cannot be divided by just 1 and 21,343,770, 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).