Problem 46047. Identify Wagstaff primes

Created by ChrisR

Solve Later

{"relationships":[{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/document","targetMode":"","relationshipId":"rId1","target":"/matlab/document.xml"},{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/output","targetMode":"","relationshipId":"rId2","target":"/matlab/output.xml"}],"parts":[{"partUri":"/matlab/document.xml","relationship":[],"contentType":"application/vnd.mathworks.matlab.code.document+xml","content":"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<w:document xmlns:w=\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\"><w:body><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>The numbers 3, 43, and 2731 are examples of</w:t></w:r><w:r><w:t> </w:t></w:r><w:hyperlink w:docLocation=\"https://mathworld.wolfram.com/WagstaffPrime.html\"><w:r><w:t>Wagstaff primes</w:t></w:r></w:hyperlink><w:r><w:t>.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Write a function to identify Wagstaff primes in the input.</w:t></w:r></w:p></w:body></w:document>"},{"partUri":"/matlab/output.xml","contentType":"text/xml","content":"<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\" ?><embeddedOutputs><metaData><evaluationState>manual</evaluationState><layoutState>code</layoutState><outputStatus>ready</outputStatus></metaData><outputArray type=\"array\"/><regionArray type=\"array\"/></embeddedOutputs>"}]}

Solve

Solution Stats

87 Solutions
20 Solvers

Last Solution submitted on Apr 26, 2021

Last 200 Solutions

Problem Comments

2 Comments

2 Comments

William on 18 Jul 2020

I think the answer to problem 7 should be [0 1 1 1 1 1 1 1 1 0 1 0], because q=31 leads to a Wagstaff prime.

ChrisR on 18 Jul 2020

Yes, you're right. Thanks, William. I've corrected the test suite. I should have known there was a problem because Athi's solution stepped around 31.

Problem Recent Solvers20

Problem Tags

primes

Community Treasure Hunt

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

Start Hunting!

Problem 46047. Identify Wagstaff primes

Solution Stats

Last 200 Solutions

Problem Comments

Problem Recent Solvers20

Suggested Problems

More from this Author115

Problem Tags

Community Treasure Hunt

Problem 46047. Identify Wagstaff primes

Solution Stats

Last 200 Solutions

Problem Comments

Problem Recent Solvers20

Suggested Problems

More from this Author115

Problem Tags

Community Treasure Hunt

Players