Bigrand Hyperduillion

The Bigrand Hyperduillion (coined by SuperJedi224) is equal to H*(10,10,3) using the H* function.
It can be equivalently defined as follows:
Let H(x)=103x+3.
Let n0=10 and nx+1=H(H(...H(10)...))) with nx Hs.
Bigrand Hyperduillion=nnn10.
Source: 
Category:Up-arrow notation level