Write all prime numbers between 60 and 80.
Write all prime numbers between the given numbers.
Given numbers: 60 and 80.
We know that the numbers which have only two factors that is 1 and the number itself are called prime numbers.
Example: 2, 3, 5, 7, 11, ..... , ....., etc. are prime numbers.
So, all prime numbers between 60 and 80 are 61, 67, 71, 73 and 79 as all of them have only two factors.
Hence, all prime numbers between 60 and 80 are 61, 67, 71, 73 and 79.
Write all prime numbers and composite numbers between 25 and 60.
What are twin-prime numbers? Write all the pairs of twin-prime numbers between 20 and 60.