Composite Numbers

49 is a composite number because it has more than two factors. The three factors of 49 are 1, 7, and 49.

There are 27 such numbers.

Of 23 and 39, only 23 is a prime number.

52 is composite. You need at least two numbers to find a GCF.

A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite. 234 is composite.

All even numbers (except 2 itself) are composite.

54 is definitely a composite number.

Factors of 54: 1, 2, 3, 6, 9, 18, 27 and 54.

Note*: All even numbers are composite, except for 2, which is a prime number.

It is not possible to list the infinite number of composite numbers. The composite numbers up to 100 are 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 22, 24, 25, 26, 27, 28, 30, 32, 33, 34, 35, 36, 38, 39, 40, 42, 44, 45, 46, 48, 49, 50, 51, 52, 54, 55, 56, 57, 58, 60, 62, 63, 64, 65, 66, 68, 69, 70, 72, 74, 75, 76, 77, 78, 80, 81, 82, 84, 85, 86, 87, 88, 90, 91, 92, 93, 94, 95, 96, 98, 99, and 100.

8,16

Yes, like all prime numbers.

4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 22, 24, 25, 26, 27, 28, 30, 32, 33, 34, 35, 36, 38, 39, 40, 42, 44, 45, 46, 48, 49, 50, 51, 52, 54, 55, 56, 57, 58, 60, 62, 63, 64, 65, 66, 68, 69, 70

4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 22, 24, 25, 26, 27, 28, 30, 32, 33, 34, 35, 36, 38, 39, 40, 42, 44, 45, 46, 48, 49, 50, 51, 52, 54, 55, 56, 57, 58, 60, 62, 63, 64, 65, 66, 68, 69, 70, 72, 74, 75, 76, 77, 78, 80, 81, 82, 84, 85, 86, 87, 88, 90, 91, 92, 93, 94, 95, 96, 98, 99

A composite number has 3 or more factors.

Example: 10 is a composite number because it has 4 factors:

1, 2, 5 and 4. You find these using multiplication or division.

Another example is 25. It has 3 factors which are 1, 5 and 25.

67 is prime.

2 46810

Yes. It can be divisible by 1, 1010, 2, 5, and more.

42 is a composite number.

A prime number has only 2 factors which are 1 and itself.

Composite numbers are everything else except 1 and 0.

1 and 0 are neither prime, nor composite.

1

The factors of 100 are:

1 x 100

2 x 50

4 x 25

5 x 20

10 x 10

1, 2, 4, 5, 10, 20, 25, 50, 100

The composite factors of 100 are: 4, 10, 20, 25, 50, and 100.

4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 22, 24, 25, 26, 27, 28, 30, 32, 33, 34, 35, 36, 38, 39, 40, 42, 44, 45, 46, 48, 49, 50, 51, 52, 54, 55, 56, 57, 58, 60, 62, 63, 64, 65, 66, 68, 69, 70, 72, 74, 75, 76, 77, 78, 80, 81, 82, 84, 85, 86, 87, 88, 90, 91, 92, 93, 94, 95, 96, 98, 99, 100

Indeed, the number 16 has 5 factors, 1, 2, 4, 8, and 16.

Composite numbers can have either an odd number or an even number of fractions.

Factors of 25 are 1, 5, 25 . (odd number of them)

Factors of 26 are 1, 2, 13, and 26 . (even number of them)

2

47 is prime, the rest are composite.

3 and 31