Solution - Simplification or other simple results

Step  1  :

 1.1     10 = 2•5

(10)²⁵⁶ = (2•5)²⁵⁶ = 2²⁵⁶ • 5²⁵⁶

Equation at the end of step  1  :

  1 • (2256•5256)

Step  2  :

Final result :

  (2256•5256)