Perfect Square
87500647720727691921 is a perfect square (9354178089 × 9354178089)
87500647720727691921 is a perfect square (9354178089 × 9354178089)
87500647720727691921 is odd
Previous odd number is 87500647720727691919
Next odd number is 87500647720727691923
1001011111001010000101111111000000011110010100100010100001010010001
669936752445594257590569483788900439800979403324765808822961