1000000007 considered harmful
Difference between en1 and en2, changed 459 character(s)
Suggested upgrade: <s>1000999777 ([prime](http://www.wolframalpha.com/input/?i=factorise+1000999777)) </s>↵
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<hr />↵
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**Update.** See [below](http://codeforces.net/blog/entry/19410?#comment-242380) for why this is not an ideal candidate.↵
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However, either of the following should be just as good as 1000000007:↵
↵
 -   **999119999** ([check](http://www.wolframalpha.com/input/?i=Factorise+%28%28999119999-1%29%2F2%29+%2A+999119999))↵
 -  **1000992299** ([check](http://www.wolframalpha.com/input/?i=Factorise+%28%281000992299-1%29%2F2%29+%2A+1000992299))

History

 
 
 
 
Revisions
 
 
  Rev. Lang. By When Δ Comment
en2 English EvgeniSergeev 2015-07-25 11:05:38 459 Update reflects the evolution of this line of thought
en1 English EvgeniSergeev 2015-07-24 06:48:37 127 Initial revision (published)