Trick to find Prime numbers between 1 & 100 - Atech Classes

Definition of a Prime Number is any whole number greater than 1 that is divisible only by 1 and itself, is defined as a prime number.
A prime number is a natural number greater than 1 that is not a product of two smaller natural numbers. A natural number greater than 1 that is not prime is called a composite number.
For example, 5 is prime because the only ways of writing it as a product, 1 × 5 or 5 × 1, involve 5 itself.
History of Prime Numbers
Prime numbers have created human curiosity since ancient times. Even today, mathematicians are trying to find prime numbers with mystical properties. Euclid proposed the theorem on prime numbers - There are infinitely many prime numbers.
Do you know all the prime numbers from 1 to 100? Did you check if each number is divisible by the smaller numbers?
Then, you definitely invested a lot of time and effort. Eratosthenes was one of the greatest scientists, who lived a few decades after Euclid, designed a smart way to determine all the prime numbers up to a given number.
This method is called the Sieve of Eratosthenes. Suppose you have to find the prime numbers up to n, we will generate the list of all numbers from 2 to n. Starting from the smallest prime number p = 2,
we will strike off all the multiples of 2, except 2 from the list.
Similarly, assign the next value of p which is a prime number greater than 2.
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
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[@legendkartik2285]

This one is my favourite and always helps me .

[@vipangupta4701]

Very useful for kids