Given a number ‘n’, the task is to generate the first ‘n’ Stormer numbers.
A Stormer Number is a positive integer ‘i’ such that the greatest prime factor of the term is greater than or equal to .
For example, 5 is a Stormer number because the greatest prime factor of 26(i.e 5*5 + 1) is 13 which is greater than or equal to 10(i.e 2*5)
Input : 5
Output : 1 2 4 5 6
Here 3 is not a Stormer number because the greatest prime
factor of 10(i.e 3*3 + 1) is 5, which is not greater than
or equal to 6(i.e 2*3)
Input : 10
Output : 1 2 4 5 6 9 10 11 12 14
- For a number ‘i’, first find the largest prime factor of the number i*i + 1.
- Next, test whether that prime factor is greater than or equal to 2*i.
- If it is greater then ‘i’ is a Stormer number.
Below is the implementation of above approach:
1 2 4 5 6 9 10 11 12 14
- Permutation of numbers such that sum of two consecutive numbers is a perfect square
- Numbers less than N which are product of exactly two distinct prime numbers
- Print N lines of 4 numbers such that every pair among 4 numbers has a GCD K
- Numbers within a range that can be expressed as power of two numbers
- Maximum sum of distinct numbers such that LCM of these numbers is N
- Count numbers which are divisible by all the numbers from 2 to 10
- Count numbers which can be constructed using two numbers
- Absolute difference between the Product of Non-Prime numbers and Prime numbers of an Array
- Absolute Difference between the Sum of Non-Prime numbers and Prime numbers of an Array
- Print numbers such that no two consecutive numbers are co-prime and every three consecutive numbers are co-prime
- Add two numbers using ++ and/or --
- Sum of first n even numbers
- Sum of all even numbers in range L and R
- LCM of two large numbers
- Sum of numbers from 1 to N which are divisible by 3 or 4
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