fish, 77 bytes

Result

WA

Code [DL]

9v \&+1&<
?\0$1-:0=
 >i:a=?v68*-1+[{1+}]
  v &0~<
?!\>&:n&1-:
l~<    ;/?

stdin

7855717694218836991381520745341387608099928324630383058137786749688121473726280448241069216843718283

stdout

stderr

something smells fishy...

strace