Problem 58379. Determine whether a number is prome

Created by ChrisR

Solve Later

In discussing the unique factorization of numbers in Elementary Number Theory, Underwood Dudley devised a new number system:
“Consider the integers 1, 5, 9, 13, 17,…; that is, all integers of the form ,  We will call an element of this set prome if it has no divisors other than 1 and itself in the set. For example, 21 is prome, whereas  is not."
Write a function to determine whether a number is prome. Take 1 to be not prome.

Solve

Solution Stats

20 Solutions
8 Solvers

Last Solution submitted on Jul 30, 2024

Last 200 Solutions

Problem Comments

1 Comment

1 Comment

Christian Schröder on 1 Jun 2023

Underwood Dudley seems to be prone (prome?) to joking -- as befits anyone bearing such a cromulent name --: these are usually called Hilbert primes or S-primes instead.

Solution Comments

Show comments

Problem Recent Solvers8

Problem Tags

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Problem 58379. Determine whether a number is prome

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers8

Suggested Problems

More from this Author272

Problem Tags

Community Treasure Hunt

Problem 58379. Determine whether a number is prome

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers8

Suggested Problems

More from this Author272

Problem Tags

Community Treasure Hunt

Players