Q: Is 1,800,900 a Composite Number?

Why is 1,800,900 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 1,800,900 can be evenly divided by 1 2 3 4 5 6 9 10 12 15 18 20 23 25 27 29 30 36 45 46 50 54 58 60 69 75 87 90 92 100 108 115 116 135 138 145 150 174 180 207 225 230 261 270 276 290 300 345 348 414 435 450 460 522 540 575 580 621 667 675 690 725 783 828 870 900 1,035 1,044 1,150 1,242 1,305 1,334 1,350 1,380 1,450 1,566 1,725 1,740 2,001 2,070 2,175 2,300 2,484 2,610 2,668 2,700 2,900 3,105 3,132 3,335 3,450 3,915 4,002 4,140 4,350 5,175 5,220 6,003 6,210 6,525 6,670 6,900 7,830 8,004 8,700 10,005 10,350 12,006 12,420 13,050 13,340 15,525 15,660 16,675 18,009 19,575 20,010 20,700 24,012 26,100 30,015 31,050 33,350 36,018 39,150 40,020 50,025 60,030 62,100 66,700 72,036 78,300 90,045 100,050 120,060 150,075 180,090 200,100 300,150 360,180 450,225 600,300 900,450 and 1,800,900, with no remainder.

Since 1,800,900 cannot be divided by just 1 and 1,800,900, 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).