Problem 1096. Largest Twin Primes

• Created by Des Mc Manus
• Appears in 3 groups

×

By solving this problem, you will make progress in the following group(s)

Magic Numbers II

• 14 Problems
• 70 Finishers

Basics - Prime Numbers

• 10 Problems
• 437 Finishers

Number theory

• 44 Problems
• 21 Finishers

Like (4)

Difficulty:

(454)

Rate

• Solve Later   
• Add To GroupÂ

Twin primes are primes p1, p2 = p1 + 2 such that both p1 and p2 are prime numbers. Given a positive integer N (>=5) what are the largest twin primes (in order) <= N. For example, if N = 20 then p1 = 17 and p2 = 19.

Solve

Solution Stats

46.1% Correct | 53.9% Incorrect

• 2011 Solutions
• 834 Solvers

Last Solution submitted on May 06, 2025

Last 200 Solutions

Solution Comments

Problem Recent Solvers834

Suggested Problems

• Program an exclusive OR operation with logical operators

  729 Solvers

• Make a run-length companion vector

  645 Solvers

• Multiples of a Number in a Given Range

  777 Solvers

• Sum of series

  1060 Solvers

• Temperature Conversion 2

  1374 Solvers