# What is a Prime number - Definition, Meaning, Properties and Types

Prime numbers are those with only two components, namely 1, and the number itself. Consider the number 5, which only contains two factors: 1 and 5. This indicates that the integer is a prime. Take the number 6, for example, which includes more than two components, namely 1, 2, 3, and 6. As a result, 6 isn't a prime number. Now, if we consider the number 1, we can see that it only contains one component. As a result, it isn't a prime number, because a prime number must have precisely two elements. This indicates that 1 is a unique number, as it is neither a prime nor a composite number.

## What Are Prime Numbers and What Do They Mean?

A prime number is a number larger than 1 that has precisely two components, namely 1 and the number itself. In other terms, a prime number cannot be split into equal groups. Only if a number can be factorized as a product of two numbers can it be divided into groups with equal numbers of items/elements. For example, 7 cannot be split into equal-sized groups.

Since ancient times, prime numbers have piqued people's interest. Mathematicians are still looking for prime numbers with magical qualities today. The prime number theorem, introduced by Euclid, states that there exists an unlimited amount of prime numbers.

Do you have a complete list of prime numbers ranging from 1 to 100? Have you double-checked to see if each number is divisible by the smaller ones? Then you've undoubtedly put in a significant amount of time and work. Eratosthenes, a famous scientist who lived a few centuries after Euclid, devised a clever method for calculating all the prime numbers up to a particular integer.

The Eratosthenes Sieve is the name given to this technique. We'll produce a list of all numbers from 2 to n if you need to locate prime numbers up to n. All multiples of 2 except 2 will be struck from the list starting with the smallest prime number, p = 2. Assign the next value of p, which is a prime number higher than 2, in the same way.

From 1 to 100, there are 25 prime numbers. The following is a comprehensive list of prime numbers from 1 to 100:

List of Numbers Prime Numbers
Between 1 and 10 2, 3, 5, 7
Between 11 and 20 11, 13, 17, 19
Between 21 and 30 23, 29
Between 31 and 40 31, 37
Between 41 and 50 41, 43, 47
Between 51 and 100 53, 59, 61, 67, 71, 73, 79, 83, 89, 97

## Prime Numbers and Their Properties

The following are some of the most essential features of prime numbers:
A prime number is a whole number that is larger than or equal to one. It is made up of only two factors: 1 and the number itself. There is just one prime number that is even, which is 2. Any two prime numbers will always be co-prime to one another. The product of prime numbers can be used to express any integer.

## Prime and composite numbers are two types of numbers.

A prime number has precisely two factors, whereas a composite number has more than two factors. For example, the number 5 can only be factorized in one way: 1 5 (OR) 5 1. There are just two factors: 1 and 5. As a result, the number 5 is a prime number. A composite number contains more than two components and is larger than one. Four, for example, can be factorized in a variety of ways. As a result, the factors of four are 1, 2, and four. There are more than two elements involved. As a result, the number 4 is composite.