perplexus.info :: Numbers : Squares needing 2 digits only

Squares needing 2 digits only (Posted on 2018-10-21)

List all perfect square numbers over 1000, employing only 2 different decimal digits. Example: 88^2=7744 will be on your list.

Ignore trivial solutions like 1 or 4 or 9 followed by an even number of zeroes.

How far can you go?

Known largest solution is a 10-digit number 6,661,661,161.

Submitted by Ady TZIDON

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Solution: (Hide)

Known largest solution is 816192 = 6661661161.

Comments: ( You must be logged in to post comments.)

Subject	Author	Date
note	xdog	2018-10-23 14:56:19
different language - same result	Steven Lord	2018-10-23 04:42:59
computer solution	Charlie	2018-10-21 19:41:09

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