variant constants

Const item0 = %0000000001
Const item1 = %0000000010
Const item2 = %0000000100
Const item3 = %0000001000
Const item4 = %0000010000
Const item5 = %0000100000
Const item6 = %0001000000
Const item7 = %0010000000
Const item8 = %0100000000
Const item9 = %1000000000

What comes next? I have many other items I need to add to the fray. %10000000001, %1000000010, etc doesn't seem to work.