Rectangular triangles that share a cathetus.
Problem 176Published on Friday, 4th January 2008, 05:00 pm; Solved by 973
The four rectangular triangles with sides (9,12,15), (12,16,20), (5,12,13) and (12,35,37) all have one of the shorter sides (catheti) equal to 12. It can be shown that no other integer sided rectangular triangle exists with one of the catheti equal to 12.
Find the smallest integer that can be the length of a cathetus of exactly 47547 different integer sided rectangular triangles.