Q: Is 21,110,400 a Composite Number?

Why is 21,110,400 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 21,110,400 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 25 30 32 36 40 45 48 50 60 64 72 75 80 90 96 100 120 128 144 150 160 180 192 200 225 240 288 300 320 360 384 400 450 480 576 600 640 720 733 800 900 960 1,152 1,200 1,440 1,466 1,600 1,800 1,920 2,199 2,400 2,880 2,932 3,200 3,600 3,665 4,398 4,800 5,760 5,864 6,597 7,200 7,330 8,796 9,600 10,995 11,728 13,194 14,400 14,660 17,592 18,325 21,990 23,456 26,388 28,800 29,320 32,985 35,184 36,650 43,980 46,912 52,776 54,975 58,640 65,970 70,368 73,300 87,960 93,824 105,552 109,950 117,280 131,940 140,736 146,600 164,925 175,920 211,104 219,900 234,560 263,880 281,472 293,200 329,850 351,840 422,208 439,800 469,120 527,760 586,400 659,700 703,680 844,416 879,600 1,055,520 1,172,800 1,319,400 1,407,360 1,759,200 2,111,040 2,345,600 2,638,800 3,518,400 4,222,080 5,277,600 7,036,800 10,555,200 and 21,110,400, with no remainder.

Since 21,110,400 cannot be divided by just 1 and 21,110,400, 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).