Q: Is 221,003,120 a Composite Number?

Why is 221,003,120 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 221,003,120 can be evenly divided by 1 2 4 5 8 10 13 16 20 26 40 41 52 65 71 73 80 82 104 130 142 146 164 205 208 260 284 292 328 355 365 410 520 533 568 584 656 710 730 820 923 949 1,040 1,066 1,136 1,168 1,420 1,460 1,640 1,846 1,898 2,132 2,665 2,840 2,911 2,920 2,993 3,280 3,692 3,796 4,264 4,615 4,745 5,183 5,330 5,680 5,822 5,840 5,986 7,384 7,592 8,528 9,230 9,490 10,366 10,660 11,644 11,972 14,555 14,768 14,965 15,184 18,460 18,980 20,732 21,320 23,288 23,944 25,915 29,110 29,930 36,920 37,843 37,960 38,909 41,464 42,640 46,576 47,888 51,830 58,220 59,860 67,379 73,840 75,686 75,920 77,818 82,928 103,660 116,440 119,720 134,758 151,372 155,636 189,215 194,545 207,320 212,503 232,880 239,440 269,516 302,744 311,272 336,895 378,430 389,090 414,640 425,006 539,032 605,488 622,544 673,790 756,860 778,180 850,012 1,062,515 1,078,064 1,347,580 1,513,720 1,556,360 1,700,024 2,125,030 2,695,160 2,762,539 3,027,440 3,112,720 3,400,048 4,250,060 5,390,320 5,525,078 8,500,120 11,050,156 13,812,695 17,000,240 22,100,312 27,625,390 44,200,624 55,250,780 110,501,560 and 221,003,120, with no remainder.

Since 221,003,120 cannot be divided by just 1 and 221,003,120, 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).