Problem 58379. Determine whether a number is prome
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.
Solution Stats
Problem Comments
-
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 commentsProblem Recent Solvers8
Suggested Problems
-
Find the largest value in the 3D matrix
1502 Solvers
-
251 Solvers
-
279 Solvers
-
Determine if input is a Narcissistic number
192 Solvers
-
79 Solvers
More from this Author271
Problem Tags
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!