Q: Is 21,001,120 a Composite Number?

Why is 21,001,120 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 21,001,120 can be evenly divided by 1 2 4 5 7 8 10 14 16 17 20 28 32 34 35 40 56 68 70 80 85 112 119 136 140 160 170 224 238 272 280 340 476 544 560 595 680 952 1,103 1,120 1,190 1,360 1,904 2,206 2,380 2,720 3,808 4,412 4,760 5,515 7,721 8,824 9,520 11,030 15,442 17,648 18,751 19,040 22,060 30,884 35,296 37,502 38,605 44,120 61,768 75,004 77,210 88,240 93,755 123,536 131,257 150,008 154,420 176,480 187,510 247,072 262,514 300,016 308,840 375,020 525,028 600,032 617,680 656,285 750,040 1,050,056 1,235,360 1,312,570 1,500,080 2,100,112 2,625,140 3,000,160 4,200,224 5,250,280 10,500,560 and 21,001,120, with no remainder.

Since 21,001,120 cannot be divided by just 1 and 21,001,120, 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).