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Computer Mathematics Program to Prime Gap Around N with Explanation

Computer Mathematics Hard Primes & Factorization 28 views
1 min read 78 words
This problem helps you practice core Computer Mathematics fundamentals in a practical way. It builds intuition around prime, gap, around. Let’s break it down step by step so you can implement it confidently.
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Problem Statement

Given n, find nearest primes below and above (p

Input Format

One integer n.

Output Format

p q gap.

Constraints

3

Code Solution

This explanation is written for learning purposes and to help beginners understand the concept clearly.
Sieve to 2*n or search outward by primality test until find p and q.

Output Example

Input:
20
Output:
19 23 4

Common Mistakes

- Treating 1 as prime.
- Checking divisibility up to n instead of sqrt(n).
- Missing negative/zero inputs handling.

Notes & Extra Practice

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