Hey, to give a bit more of an explanation on that Fuji-san note at the end. Yes, I know this is 4 years later but if you're confused how the explanation of the number equates to Fuji-san, here you go.
The square root of 5 is a common mnemonic for memorization, and has popped up as a math reference in games like The World Ends with You, a Square Enix game, for example.
Japan has a few ways to read numbers, one based on Chinese (A lot of japanese words have roots in Chinese, called On reading), and one used for counting numbers usually up to 10, called Kun reading.
In On, 0-10 are Rei(0) Ichi(1) Ni(2) San(3) Shi(4) Go(5) Roku(6) Shichi(7) Hachi(8) Ku/Kyu(9) Ju(10).
In Kun they are Maru for 0, and all 1-9 lag with Tsu (as in Hitotsu), so 1-9 is Hito(1) Futa(2) Mit(3) Yon/Yot(4) Itsu(5) Mut(6) Nana(7) Yat(8) Kokono(9).
0 is also commonly just Zero or O.
As it said, the numbers used are digits 2-11 of the root of 5. The root of 5 is 2.236067997... so 2-11 is, 36,067,997. The original is 2.236067997. Zero can be O, 2 can be Fu(ta) or Ni, which is close to Ji. Note the mnemonic uses BOTH On and Kun. So to read the square root, it would be:
fu(2) ji(2) san(3) roku(6) o(0) mu(6) na(7) ku(9) for 2.2360679. Fuji-san Roku Omu Naku. Or A parrot cries at the foot of mount fuji.
They also have one for the square root of 2,
hito(1) yo(4) hito(1) yo(4) ni(2) hito(1) mi(3) go(5) ro(6)
for "night by night, things seem to become better to be seen"
Just in case anyone was confused why the number and the Fuji-San mneumonic were so different.