Determine the minimum value of a positive integer N such that the four digits immediately following the decimal point in the base ten expansion of √N is 2012.

*** For an extra challenge, solve this puzzle without using a computer program.

(In reply to re(2): computer solution by Charlie)

God bless software!

Charlie, I've used EXCELL and stopped at 200, however  examining the results - the later appearance of progression's tripples was anticipated.

Posted by Ady TZIDON on 2012-04-05 02:18:45