Prime Numbers

76

38,2

19,2,2

2 3 5 7 11 13 17 19 23 29

All composite numbers can be expressed as unique products of prime numbers. This is accomplished by dividing the original number and its factors by prime numbers until all the factors are prime. A factor tree can help you visualize this.
Example: 210

210 Divide by two.
105,2 Divide by three.
35,3,2 Divide by five.
7,5,3,2 Stop. All the factors are prime.

2 x 3 x 5 x 7 = 210
That's the prime factorization of 210.

2 x 3 x 5 = 30

Composite Numbers are some special numbers which have more than 2 factors which consists of at least 1 prime factor.

Because 2 has only two factors which are itself and one

One is not considered to be a prime number because it has only one factor which is itself

Itself and any multiples of 1903

22 = 2 * 11

6 = 2 * 3

2^6 x 5^6

2 x 2 x 3 x 3

There is only one even prime number and it is 2

According to Wolfram Alpha, that's a prime number.

3 x 5 x 7

Itself and any multiples of it

Itself and one because 59 is a prime number

What prime numbers go into 209

They are whole numbers.

No.

It is a composite number because it has more than two factors

59 61 67 71 73 79 83 89.

11, 13, 17, 19

248 is a composite number because it has factors other than 1 and itself. It is not a prime number.

For example, 248 is an even number, which means it is also divisible by 2.

1 × 1 × 110

1 × 2 × 55

1 × 5 × 22

1 × 10 × 11

2 × 5 × 11

It is: 3*5*7*7 = 735

5 and 103