Q: Is 231,221,120 a Composite Number?

Why is 231,221,120 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 231,221,120 can be evenly divided by 1 2 4 5 8 10 13 16 20 26 32 40 52 64 65 80 104 128 130 160 208 260 320 416 520 640 832 1,040 1,664 2,080 4,160 8,320 27,791 55,582 111,164 138,955 222,328 277,910 361,283 444,656 555,820 722,566 889,312 1,111,640 1,445,132 1,778,624 1,806,415 2,223,280 2,890,264 3,557,248 3,612,830 4,446,560 5,780,528 7,225,660 8,893,120 11,561,056 14,451,320 17,786,240 23,122,112 28,902,640 46,244,224 57,805,280 115,610,560 and 231,221,120, with no remainder.

Since 231,221,120 cannot be divided by just 1 and 231,221,120, 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).