Perfect Square
665230247341289289 is a perfect square (815616483 × 815616483)
665230247341289289 is a perfect square (815616483 × 815616483)
665230247341289289 is odd
Previous odd number is 665230247341289287
Next odd number is 665230247341289291
1001 0011 1011 0101 1111 0110 0010 1010 1010 1001 1111 0110 1111 0100 1001