Table Of Contents
157 LearnersLast updated on December 1st, 2024
Is 72 a prime number?
Prime numbers have often fascinated mathematicians. Especially because of their no order or pattern for appearance at random. Even when we don’t understand their emergence in the list of numbers, we apply them in medicine, computer algorithms, cryptography, and others.
Is 72 a prime number?
How do we find whether a number is prime or not? Let us check out the various methods to learn when we have to check if a number is a prime number.
Using the Counting Divisors Method
The counting divisors method for 72 would simply be
Divisors of 72= 1,2,3,4,6,8,9,12,18,24,36,72
Number of divisors= 12
The number 72 can be considered composite.
Using the Divisibility Test Method
In the divisibility method, the prime number only has 2 divisors, which are 1 and itself.
Divisors of 72=1,2,3,4,6,8,9,12,18,24,36,72
As 72 has factors more than 2 then it is not a prime number.
Using Prime Number Chart
The list of prime numbers under 100 are;
2,3,5,7,11,13,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97.
72 is not present in the list, it is not a prime number.
Using the Prime Factorization Method
This method is only used for a non-prime number/composite number. Since 72 is a composite number, prime factorization for 72 is :
Factors of 72 = 2×2×2×3×3
Common mistakes to avoid when determining if 72 is a prime number
FAQs: Is 72 a Prime Number?
1.Is 4 relatively prime to 6?
2.What is the GCF of 44 and 66?
3. What is the GCF of 40 and 100?
4.What is the GCF of 52 and 65?
5. What is the GCF of 11 and 13?
6.Important Glossaries for "Is 72 a Prime Number"
Explore More numbers
Previous to Is 72 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.
