Perfect Square
666998747176673568539543768396891965696111109881 is a perfect square (816699912560711352338891 × 816699912560711352338891)
666998747176673568539543768396891965696111109881 is a perfect square (816699912560711352338891 × 816699912560711352338891)
666998747176673568539543768396891965696111109881 is odd
Previous odd number is 666998747176673568539543768396891965696111109879
Next odd number is 666998747176673568539543768396891965696111109883
111010011010101010000100001110001000111100000001011000011110111110100010010011000011101111110100011110010011011100100010110001011101010001110010110011011111001
296739290901190081876366835924113392128454415366324631178735986273870330638832289110104372689083035051985507179547281985307814184139628584444841
444887328735252106719002176765267149228142751522862742706968945593836581218572689629757655834161