Q: Is 21,011,340 a Composite Number?

Why is 21,011,340 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 21,011,340 can be evenly divided by 1 2 3 4 5 6 7 10 12 14 15 19 20 21 28 30 35 38 42 57 60 70 76 84 95 105 114 133 140 190 210 228 266 285 380 399 420 532 570 665 798 1,140 1,330 1,596 1,995 2,633 2,660 3,990 5,266 7,899 7,980 10,532 13,165 15,798 18,431 26,330 31,596 36,862 39,495 50,027 52,660 55,293 73,724 78,990 92,155 100,054 110,586 150,081 157,980 184,310 200,108 221,172 250,135 276,465 300,162 350,189 368,620 500,270 552,930 600,324 700,378 750,405 1,000,540 1,050,567 1,105,860 1,400,756 1,500,810 1,750,945 2,101,134 3,001,620 3,501,890 4,202,268 5,252,835 7,003,780 10,505,670 and 21,011,340, with no remainder.

Since 21,011,340 cannot be divided by just 1 and 21,011,340, 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).