Perfect Square
81534050052662607812721 is a perfect square (285541678311 × 285541678311)
81534050052662607812721 is a perfect square (285541678311 × 285541678311)
81534050052662607812721 is odd
Previous odd number is 81534050052662607812719
Next odd number is 81534050052662607812723
10001010000111111100000111110111010001111110001000010000001010001100001110001
542022165401160565325238407734620810301305082741350839532796240481361