Practice Questions on Prime and Composite Numbers
Here are some practice questions/problems based on prime and composite numbers:
Q1. Is 1 a composite number?
Q2. Check whether 23 is a prime number.
Q3. Check whether 56 is a prime number.
Q4. Check whether 2779 is a prime number. (Hint: Use Efficient Primarility Test)
Q5. Use Eratosthenes sieve to find all the prime numbers from 1 to 100.
Q6. Find the prime factors of 69.
Prime and Composite Numbers
Prime and Composite Numbers are commonly used classifications of Natural Numbers based on divisibility and the number of Factors. A Prime Number has only two factors while Composite Numbers have more than two factors. This classification of Numbers makes the study of natural numbers more organized and convenient and is useful in a variety of situations like computer algorithms, biology, understanding of Number Theory, etc.
This article describes what are prime and composite numbers, the types of primes and composite numbers, and tests to check whether a given number is prime or not (primality tests). Finally, a few solved questions, and a few practice problems related to prime and composite numbers are presented.
Table of Content
- What are Prime and Composite Numbers?
- Types of Prime and Composite numbers
- Prime and Composite Numbers from 1 to 100
- Prime and Composite Numbers chart
- Difference between Prime and Composite Numbers
- Tests for Prime and Composite numbers