Problem 156. Parasitic numbers

Created by the cyclist
Appears in Operations

Difficulty:Rate

Solve Later
Add To GroupÃ‚

Test whether the first input x is an n-parasitic number: http://en.wikipedia.org/wiki/Parasitic_number. ( n is the second input.)

Examples:

parasitic(128205,4) ---> true

parasitic(179487,4) ---> true

parasitic(179487,3) ---> false

Solve

Solution Stats

611 Solutions
299 Solvers

Last Solution submitted on Feb 09, 2025

Last 200 Solutions

Problem Comments

5 Comments

5 Comments

Show 2 older comments

John D'Errico on 30 Sep 2016

I've added some test cases, that will make it a bit more difficult to game this problem.

JD on 7 Nov 2016

Cases 5 and 7 are identical, and I believe they are both wrong. 5 x 142857 = 714285. Isn't this a parasitic number? What am I missing?

Jess Stuart on 8 Feb 2017

Can the problem creator disqualify "solutions" that cheat? There should be a point penalty (-200) associated with cheating too.

Solution Comments

Show comments

Problem Recent Solvers299

Problem Tags

Community Treasure Hunt

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

Start Hunting!

Problem 156. Parasitic numbers

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers299

Suggested Problems

More from this Author23

Problem Tags

Community Treasure Hunt

Problem 156. Parasitic numbers

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers299

Suggested Problems

More from this Author23

Problem Tags

Community Treasure Hunt

Players