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Last updated on May 26th, 2025

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Is 118 a Prime Number?

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A number is classified as a prime number if it satisfies a certain condition. The number has to be having only two factors 1 and the number itself, all other numbers which have more than two factors are categorized under composite numbers. The prime are used in our everyday life for the security and pin encryption and in machinery building.

Is 118 a Prime Number? for Indian Students
Professor Greenline from BrightChamps

Is 118 a prime number?

A prime number should not have factors more than 2 but 118 has 4 divisors. No, 118 is a composite number.

 
The divisors of 118 are  1, 2, 59, and 118.  Therefore, 118 is a composite number. Composite numbers are the numbers which have factors more than 2.

 

is 118 a prime number
 

Professor Greenline from BrightChamps

Why is 118 a prime number?

A number to be a prime number should follow the criteria, which is that it should not have factors more than 2. 118 has factors more than 2, so it is a composite number.


Given below are a few ways that can be used to find prime or composite numbers.
 

Professor Greenline from BrightChamps

Using the Counting Divisors Method

In this method, the divisors of a number are listed, and the number is checked, to be called a prime number. The counting divisors method for 118 would simply be


Divisors of 118 =  1, 2, 59, 118


Number of divisors = 4


The number 118 can be considered composite.

Professor Greenline from BrightChamps

Using the Divisibility Test Method

In divisibility method, the prime number only has 2 divisors, which are 1 and itself.


Divisors of 118 =  1, 2, 59, 118


As 118 has factors more than 2 then it is not a prime number. 

Professor Greenline from BrightChamps

Using Prime Number Chart

We write the prime number chart up to 10, which helps in sorting numbers.


The prime numbers from 100 to 200 are 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199. 118 is not on the list, so it is not a prime number.
 

Professor Greenline from BrightChamps

Using the Prime Factorization Method

This method is only used for a composite number. Since 118 is a composite number, prime factorization for 118 is: 21 x 591


Hence, the prime factors of 118 are 2 and 59.

Max Pointing Out Common Math Mistakes

Common Mistakes to Avoid When Determining if 118 is a Prime Number.

It is common to make mistakes while learning the prime numbers, and children while learning prime numbers for the first time it is mostly certain to happen. The mistakes and the solution given below will help you in getting an idea on where all mistakes might be made and how to avoid them.
 

Mistake 1

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Not considering 1 as a factor.

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Students might not count 1 as a factor, and will mostly skip it, which results in wrong count of factors.
 

Ray Thinking Deeply About Math Problems

FAQs for “Is 118 a Prime Number”

1. How many factors does 118 have?

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2.What is the GCF of 118 and 342?

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3.What is the LCM of 8 and 118?

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4. Is 118 a multiple of nine?

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5.Is there any number that does not come under prime numbers or composite numbers?

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6.How can children in India use numbers in everyday life to understand Is 118 a Prime Number??

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7.What are some fun ways kids in India can practice Is 118 a Prime Number? with numbers?

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8.What role do numbers and Is 118 a Prime Number? play in helping children in India develop problem-solving skills?

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9.How can families in India create number-rich environments to improve Is 118 a Prime Number? skills?

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Professor Greenline from BrightChamps

Important Glossaries for “Is 118 a prime number?”

  • Divisibility: The property of a number which can divide another number completely without leaving any remainder.

 

  • Chart of Prime Numbers: The numbers which has only two factors are listed together.

 

  • Composite Number: A number that has more than two positive divisors which are opposite to prime numbers which has only
Professor Greenline from BrightChamps

About BrightChamps in India

At BrightChamps, we know numbers are more than just digits—it’s a way to open doors to countless opportunities! Our mission is to help kids all across India grasp important math skills, like today’s focus on the Is 118 a Prime Number?with a special focus on understanding prime numbers—in a way that’s lively, enjoyable, and easy to follow. Whether your child is figuring out how fast a train passes by, keeping track of scores during a Cricket match, or managing their pocket money to buy the latest gadgets, mastering numbers gives them the confidence they need for everyday challenges. Our interactive lessons make learning both simple and fun. Because kids in India learn in many different ways, we tailor our approach to fit each child’s unique style. From the busy markets of Mumbai to the vibrant streets of Delhi, BrightChamps brings math to life, making it relatable and exciting throughout India. Let’s make prime numbers a fun part of every child’s math journey!
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Hiralee Lalitkumar Makwana

About the Author

Hiralee Lalitkumar Makwana has almost two years of teaching experience. She is a number ninja as she loves numbers. Her interest in numbers can be seen in the way she cracks math puzzles and hidden patterns.

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Max, the Girl Character from BrightChamps

Fun Fact

: She loves to read number jokes and games.

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