Q: Is 21,302,400 a Composite Number?

Why is 21,302,400 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 21,302,400 can be evenly divided by 1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 25 28 30 32 35 40 42 48 50 56 60 64 70 75 80 84 96 100 105 112 120 128 140 150 160 168 175 192 200 210 224 240 280 300 317 320 336 350 384 400 420 448 480 525 560 600 634 640 672 700 800 840 896 951 960 1,050 1,120 1,200 1,268 1,344 1,400 1,585 1,600 1,680 1,902 1,920 2,100 2,219 2,240 2,400 2,536 2,688 2,800 3,170 3,200 3,360 3,804 4,200 4,438 4,480 4,755 4,800 5,072 5,600 6,340 6,657 6,720 7,608 7,925 8,400 8,876 9,510 9,600 10,144 11,095 11,200 12,680 13,314 13,440 15,216 15,850 16,800 17,752 19,020 20,288 22,190 22,400 23,775 25,360 26,628 30,432 31,700 33,285 33,600 35,504 38,040 40,576 44,380 47,550 50,720 53,256 55,475 60,864 63,400 66,570 67,200 71,008 76,080 88,760 95,100 101,440 106,512 110,950 121,728 126,800 133,140 142,016 152,160 166,425 177,520 190,200 202,880 213,024 221,900 253,600 266,280 284,032 304,320 332,850 355,040 380,400 426,048 443,800 507,200 532,560 608,640 665,700 710,080 760,800 852,096 887,600 1,014,400 1,065,120 1,331,400 1,420,160 1,521,600 1,775,200 2,130,240 2,662,800 3,043,200 3,550,400 4,260,480 5,325,600 7,100,800 10,651,200 and 21,302,400, with no remainder.

Since 21,302,400 cannot be divided by just 1 and 21,302,400, 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).