Perfect Square
642827248317996889 is a perfect square (801765083 × 801765083)
642827248317996889 is a perfect square (801765083 × 801765083)
642827248317996889 is odd
Previous odd number is 642827248317996887
Next odd number is 642827248317996891
1000 1110 1011 1100 0111 1111 1001 1111 1011 1110 1111 1001 1111 0101 1001