Q: Is 21,243,200 a Composite Number?

Why is 21,243,200 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 21,243,200 can be evenly divided by 1 2 4 5 8 10 11 16 17 20 22 25 32 34 40 44 50 55 64 68 71 80 85 88 100 110 136 142 160 170 176 187 200 220 272 275 284 320 340 352 355 374 400 425 440 544 550 568 680 704 710 748 781 800 850 880 935 1,088 1,100 1,136 1,207 1,360 1,420 1,496 1,562 1,600 1,700 1,760 1,775 1,870 2,200 2,272 2,414 2,720 2,840 2,992 3,124 3,400 3,520 3,550 3,740 3,905 4,400 4,544 4,675 4,828 5,440 5,680 5,984 6,035 6,248 6,800 7,100 7,480 7,810 8,800 9,350 9,656 11,360 11,968 12,070 12,496 13,277 13,600 14,200 14,960 15,620 17,600 18,700 19,312 19,525 22,720 24,140 24,992 26,554 27,200 28,400 29,920 30,175 31,240 37,400 38,624 39,050 48,280 49,984 53,108 56,800 59,840 60,350 62,480 66,385 74,800 77,248 78,100 96,560 106,216 113,600 120,700 124,960 132,770 149,600 156,200 193,120 212,432 241,400 249,920 265,540 299,200 312,400 331,925 386,240 424,864 482,800 531,080 624,800 663,850 849,728 965,600 1,062,160 1,249,600 1,327,700 1,931,200 2,124,320 2,655,400 4,248,640 5,310,800 10,621,600 and 21,243,200, with no remainder.

Since 21,243,200 cannot be divided by just 1 and 21,243,200, 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).