Question 322684
It's the difference of two squares.
{{{(2^16 - 1 )=(2^8-1)(2^8+1)}}}
{{{(2^16 - 1 )=(2^4-1)(2^4+1)(2^8+1)}}}
{{{(2^16 - 1 )=(2^2-1)(2^2+1)(2^4+1)(2^8+1)}}}
{{{(2^16 - 1 )=(2-1)(2+1)(2^2+1)(2^4+1)(2^8+1)}}}
{{{(2^16 - 1 )=(1)(3)(5)(17)(257)}}}
{{{(2^16 - 1 )=65535}}}