100,489 = (317)2
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1024
One hundred is the least three-digit square number. It is formed by 102.
121
' 100 ' is the square of 10.
I would just estimate, and then try out a few in the neighborhood of my estimate until I find it.My estimate is 320.3202 = 102,400 too big3152 = 99,225 too small3162 = 99,856 too small3172 = 100,489 just rightThe smallest 6-digit perfect square is 100,489.It's the square of 317.