Shyam Sunder Gupta
IRSE,
Indian Railways,
Jaipur, India302019
email: guptass@rediffmail.com
http://www.shyamsundergupta.com/
What is New? (Update 28 November, 2018) The page on Amazing Number 108 updated and enlarged. The page on Fascinating Triangular Numbers updated and enlarged. The page on Curious Properties of 153 updated and enlarged. The page on Amicable Numbers updated. 
Do You Know?There can not be three consecutive triangular numbers which can form a Pythagorean triple. 
Can You Find?CYF NO. 50 Three odd positive integers a, b and c such that a+b, b+c and c+a are all Perfect Squares.email your answer 
Contents
Note: The above topics including many more will be added in due course.

My Contributions in Prime CuriosPrime Curios!  site maintained by G. L. Honaker Jr. and Chris Caldwell

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This page was last updated on 28th November, 2018.
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