Composite Numbers from 1 to 100: Definition & explanation

Composite Numbers Between 1 To 100: Composite Numbers are numbers that have more than 2 factors and those numbers which are not prime are also known as Composite. From 1 To 100, there are a total of 74 Composite Numbers.

On this page, you will get to know the details on Composite Numbers from 1 to 100. In the later sections of this article, we have provided the complete list, charts as well as some important questions that will help you build your concepts.

How To Find Composite Numbers Between 1 To 100?

There are three methods for determining whether a number is composite or not:

1. Factorisation Method
2. Divisibility Method
3. Prime Number Method

Factorisation Method To Find Composite Number

You need to find the prime factors of the number to check whether it is composite or not. If the number has more than 2 prime factors then it is composite. Let us take 35 as an example:

1 x 35 = 35

5 x 7 = 35

7 x 5 = 35

35 x 1 = 35

Divisibility Method To Find Composite Number

In this method, you need to check the numbers with which the given number is divisible. If the number of divisors is more than 2 then it is composite.

42 ÷ 1 = 42

42 ÷ 2 = 21

42 ÷ 3 = 14

42 ÷ 6 = 7

42 ÷ 14 = 3

42 ÷ 21 = 2

42 ÷ 41 = 1

Prime Number Method To Find Composite Number

This is the most simple method as all you need to know is the Prime Numbers because all numbers which are not prime are composite.

Useful Tip: 1 is neither prime nor composite.

List of Composite Numbers Between 1 To 100

Now that you are aware of the methods that will help you in finding the composite numbers for any given range, check the list of composite numbers from 1 to 100 below:

Composite Numbers Between 1 To 20	Composite Numbers Between 21 To 50	Prime Numbers Between 51 To 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

Composite Numbers Chart Between 1 To 100

Here you can check the chart that will help you know the composite numbers from 1 to 100:

Problems & Practice Questions On Composite Nos.

These questions will help clear further concepts and also improve your marks:

Q1. Write five pairs of composite numbers less than 50 whose sum is divisible by 5.
Q2. Fill in the blanks
a) A number that has more than two factors is called a ______.
b) The smallest composite number is ______.
c) The smallest even composite number is ______.
Q3. Which of the following numbers is composite?
(a) 17
(b) 51
(c) 37
(d) 26
Q4. What is the greatest composite number between 1 and 10?
Q5. Give three pairs of composite numbers whose difference is 2.
Q6. Write seven consecutive composite numbers less than 100 so that there is no prime number between them.
Q7. Write down separately the prime and composite numbers less than 20.

Frequently Asked Questions – FAQs

Question: What are composite numbers from 1 to 100?
Answer: There are 74 composite numbers from 1 to 100. The complete list has been provided on this page.

Question: Is 17 a composite number?
Answer: No, 17 is a Prime Number.

Question: What is Composite Number and Prime Number?
Answer: Numbers having more than 2 factors are called composite & numbers having exactly 2 factors are called Prime.

Question: Is 9 a composite number?
Answer: Yes, 9 (1,3,9) has 3 factors therefore it is composite.

This was all on Composite Numbers Between 1 to 100. If you have further doubts feel to use the comments section & we will update you shortly.