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File:Fukashigi.jpg

Fukashigi (不可思議 written in Japanese characters, means "inconceivable") is \(10^{64}\).[1][2]. The word is in Buddhism's sutra, and it was adopted in Chinese counting system and in Japanese counting system. 

In English, it is ten vigintillion in short scale and ten thousand decillion in long scale.

In the myriad system, it is known as Quadryllion.

In the Quad-illion system, it is known as Quadhexecillion.

Sources Edit

  1. Book of Numbers by J.H. Conway and R.K. Guy
  2. 大数の名前
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