Perfect Square
661437686233331754038745484802807214232347564965888000000100 is a perfect square (813288193836189751705599999990 × 813288193836189751705599999990)
661437686233331754038745484802807214232347564965888000000100 is a perfect square (813288193836189751705599999990 × 813288193836189751705599999990)
661437686233331754038745484802807214232347564965888000000100 is even
Previous even number is 661437686233331754038745484802807214232347564965888000000098
Next even number is 661437686233331754038745484802807214232347564965888000000102
289378863885908484351684419440282769586364443781648275664789752564621071120778293845650872829417629584971711775541876348874742193052612964486828930741480058990148976640000001000000
437499812769703426977861643064631560030640394871522661845454894897502613124274240674602106169450098056993177600000010000
1101001010111111000001110101001101100001000000111111111100000000000010111011111000000001000000000101111000011011010011010110010111101001101001111110101011101000100100101101100000000000000000001100100
1512770165154100777400027370010005703323262751517653504455400000144