Perfect Square
642061448120728450902130976841906361 is a perfect square (801287369250712981 × 801287369250712981)
642061448120728450902130976841906361 is a perfect square (801287369250712981 × 801287369250712981)
642061448120728450902130976841906361 is odd
Previous odd number is 642061448120728450902130976841906359
Next odd number is 642061448120728450902130976841906363
11110111010100000010010110011011000000100110000001010110011101110011111110011111011010000001100010100011011100010111001
264685275382256372001430131488683925743211308667950814646118471153009606143413876278472517983087459530523881
412242903162886872016613601410765980324200255395073091007882992692262321