The Biggest Number

    Can you name the biggest number that can be written with four 1s?  

Answer:     People often think of the number 1111 as the biggest number that can be written with four 1’s. But there is a number many, many times greater than this number, namely: 11ˡˡ

         11ˡˡ =285311670611

               As you can see 11ˡˡ is almost 250 million times greater than 1111.