A palindromic number reads the same both ways. The largest palindrome made from the product of two 2-digit numbers is 9009 = 91 99.
Find the largest palindrome made from the product of numbers less than or equal to the input number.
Thank you to Project Euler Problem 4
Solution Stats
Problem Comments
-
1 Comment
Alan Chalker
on 16 Feb 2012
Your last test case is accidentally all commented out, so isn't a real test case
Solution Comments
-
2 Comments
Aurelien Queffurust
on 22 Jun 2012
Cheating ...
Ned Gulley
on 22 Jun 2012
Thanks for the note Aurelien. I added to the test suite.
-
1 Comment
Aurelien Queffurust
on 22 Jun 2012
Size 42 ! wow should be the best solution
Recent Solvers112
Suggested Problems
-
Determine whether a vector is monotonically increasing
8890 Solvers
-
Choose the best fitting dominoes
159 Solvers
-
138 Solvers
-
Generate a string like abbcccddddeeeee
152 Solvers
-
Make a vector of prime numbers
98 Solvers
More from this Author52
Tags
Select a Web Site
Choose a web site to get translated content where available and see local events and offers. Based on your location, we recommend that you select: .
Select web siteYou can also select a web site from the following list:
Americas
- América Latina (Español)
- Canada (English)
- United States (English)
Europe
- Belgium (English)
- Denmark (English)
- Deutschland (Deutsch)
- España (Español)
- Finland (English)
- France (Français)
- Ireland (English)
- Italia (Italiano)
- Luxembourg (English)
- Netherlands (English)
- Norway (English)
- Österreich (Deutsch)
- Portugal (English)
- Sweden (English)
- Switzerland
- United Kingdom (English)