In pound-star notation, the Astragol is equal to #*(10,10)*100. It is equal to 101*1,010101, or about 2.8x10305.


The "Astra-" prefix means "star". The "-gol" ending is primarily a reference to the Googol and its relatives.




Notation Approximation
Scientific notation 2.759*10^{305}
Up-arrow notation 12\uparrow283
Fast-growing hierarchy f_{2}(1005)
Hardy hierarchy H_{\omega^2}(1005)
Slow-growing hierarchy g_{\omega^{102}}(1005)

See AlsoEdit

Numbers By SuperJedi224

Fibonacci Numbers

Pound-Star Notation

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