10 is the 1st double digit number..........words into math.................1st.........like 1..............double digit......like 2............like the critical line at 1/2...................10..........the repeated..........block ends at the tenth number in e..............................28............is repeated twice............one number..............twice...........like 1/2..................fractal patterns...........galore............


e (Euler's Number)

The number e is a famous irrational number, and is one of the most important numbers in mathematics.
The first few digits are:

2.7182818284590452353602874713527 (and more ...)

It is often called Euler's number after Leonhard Euler.
And Euler is spoken like "Oiler".