Q: Is 20,451,000 a Composite Number?

Why is 20,451,000 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 20,451,000 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 17 20 24 25 30 34 40 50 51 60 68 75 85 100 102 120 125 136 150 170 200 204 250 255 300 340 375 401 408 425 500 510 600 680 750 802 850 1,000 1,020 1,203 1,275 1,500 1,604 1,700 2,005 2,040 2,125 2,406 2,550 3,000 3,208 3,400 4,010 4,250 4,812 5,100 6,015 6,375 6,817 8,020 8,500 9,624 10,025 10,200 12,030 12,750 13,634 16,040 17,000 20,050 20,451 24,060 25,500 27,268 30,075 34,085 40,100 40,902 48,120 50,125 51,000 54,536 60,150 68,170 80,200 81,804 100,250 102,255 120,300 136,340 150,375 163,608 170,425 200,500 204,510 240,600 272,680 300,750 340,850 401,000 409,020 511,275 601,500 681,700 818,040 852,125 1,022,550 1,203,000 1,363,400 1,704,250 2,045,100 2,556,375 3,408,500 4,090,200 5,112,750 6,817,000 10,225,500 and 20,451,000, with no remainder.

Since 20,451,000 cannot be divided by just 1 and 20,451,000, 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).