Q: Is 21,021,000 a Composite Number?

Why is 21,021,000 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 21,021,000 can be evenly divided by 1 2 3 4 5 6 7 8 10 11 12 13 14 15 20 21 22 24 25 26 28 30 33 35 39 40 42 44 49 50 52 55 56 60 65 66 70 75 77 78 84 88 91 98 100 104 105 110 120 125 130 132 140 143 147 150 154 156 165 168 175 182 195 196 200 210 220 231 245 250 260 264 273 275 280 286 294 300 308 312 325 330 350 364 375 385 390 392 420 429 440 455 462 490 500 520 525 539 546 550 572 588 600 616 637 650 660 700 715 728 735 750 770 780 825 840 858 875 910 924 975 980 1,000 1,001 1,050 1,078 1,092 1,100 1,144 1,155 1,176 1,225 1,274 1,300 1,320 1,365 1,375 1,400 1,430 1,470 1,500 1,540 1,560 1,617 1,625 1,650 1,716 1,750 1,820 1,848 1,911 1,925 1,950 1,960 2,002 2,100 2,145 2,156 2,184 2,200 2,275 2,310 2,450 2,548 2,600 2,625 2,695 2,730 2,750 2,860 2,940 3,000 3,003 3,080 3,185 3,234 3,250 3,300 3,432 3,500 3,575 3,640 3,675 3,822 3,850 3,900 4,004 4,125 4,200 4,290 4,312 4,550 4,620 4,875 4,900 5,005 5,096 5,250 5,390 5,460 5,500 5,720 5,775 5,880 6,006 6,125 6,370 6,468 6,500 6,600 6,825 7,000 7,007 7,150 7,350 7,644 7,700 7,800 8,008 8,085 8,250 8,580 9,100 9,240 9,555 9,625 9,750 9,800 10,010 10,500 10,725 10,780 10,920 11,000 11,375 11,550 12,012 12,250 12,740 12,936 13,000 13,475 13,650 14,014 14,300 14,700 15,015 15,288 15,400 15,925 16,170 16,500 17,160 17,875 18,200 18,375 19,110 19,250 19,500 20,020 21,000 21,021 21,450 21,560 22,750 23,100 24,024 24,500 25,025 25,480 26,950 27,300 28,028 28,600 28,875 29,400 30,030 31,850 32,340 33,000 34,125 35,035 35,750 36,750 38,220 38,500 39,000 40,040 40,425 42,042 42,900 45,500 46,200 47,775 49,000 50,050 53,625 53,900 54,600 56,056 57,750 60,060 63,700 64,680 67,375 68,250 70,070 71,500 73,500 75,075 76,440 77,000 79,625 80,850 84,084 85,800 91,000 95,550 100,100 105,105 107,250 107,800 115,500 120,120 125,125 127,400 134,750 136,500 140,140 143,000 147,000 150,150 159,250 161,700 168,168 175,175 191,100 200,200 202,125 210,210 214,500 231,000 238,875 250,250 269,500 273,000 280,280 300,300 318,500 323,400 350,350 375,375 382,200 404,250 420,420 429,000 477,750 500,500 525,525 539,000 600,600 637,000 700,700 750,750 808,500 840,840 875,875 955,500 1,001,000 1,051,050 1,401,400 1,501,500 1,617,000 1,751,750 1,911,000 2,102,100 2,627,625 3,003,000 3,503,500 4,204,200 5,255,250 7,007,000 10,510,500 and 21,021,000, with no remainder.

Since 21,021,000 cannot be divided by just 1 and 21,021,000, 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).