137 LearnersLast updated on May 26th, 2025
Is 331 a Prime Number?
Do you get confused while checking if a number is prime? Determining a prime number is easy. They are used in cybersecurity. Here, this article checks if 331 is a prime.
Why is 331 a prime number?
Since 331 has two factors, it is a prime number. The basic methods used to check if a number is prime are the counting divisors method, divisibility method, prime number chart, and prime factorization.
Using the Counting Divisors Method
This method will tell the total number of divisors a number has.
The divisors of 331 = 1, 331
Therefore, 331 is a prime number.
Using the Divisibility Test Method
If a number has two factors, it is prime. Here, the factors of 331 are 1 and 331.
Using Prime Number Chart
This method will check if a number is prime or not with the help of a prime number chart. Only if the number is seen in the chart, then it's a prime.
Using the Prime Factorization Method
This method expresses the product of prime factors in its exponential form.
The prime factorization of 331 is → 1 × 3311
Hence, the prime factor of 331 is 331
Common Mistakes to Avoid When Determining if 331 is a Prime Number
While determining whether a number is prime or not, you can get confused. Here, we will discuss the mistakes that can happen and the solutions to tackle them.
Mistake 1
Writing odd numbers as prime
All odd numbers are not prime. For example, the number 49 is odd but not prime.
FAQs for ‘Is 331 is a Prime Number’
1.How to check if a number is prime?
2.How to write the prime number 397 in words?
3.Is 31 prime?
4.Is 999 prime?
5.What are the multiples of 331?
Important Glossaries for "Is 331 a Prime Number"
- Prime Number: A number with two positive numbers as its only factors
- Composite Number: A number with more than two positive numbers as factors
- Prime Factorization: Method of expressing the product of prime factors in exponential form.
Explore More numbers
Previous to Is 331 a Prime Number?
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.
Fun Fact
: She loves to read number jokes and games.
