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Ekatommyrillion is equal to 103,000,000.

It is 3,000,001 digits long and the 999,999'th -illion (since $$999999*3+3=3,000,000$$ )

Aarex Tiaokhiao calls this number blastillion.

André Joyce calls this number googodbar, and it's equal to 1,000,000500,000.

A game called Tap Tales refers to this number as novenonagintanongentillinovenonagintanongentillion.

## Approximations

Notation Lower bound Upper bound
Scientific notation $$1\times10^{3\,000\,000}$$
Arrow notation $$10\uparrow3\,000\,000$$
Steinhaus-Moser Notation 6 7
Copy notation 2[2] 3[3]
Chained arrow notation $$10\rightarrow3\,000\,000$$
Taro's multivariable Ackermann function A(3,A(3,20)) A(3,A(3,21))
Pound-Star Notation #*((1652770))*705 #*((1652771))*705
PlantStar's Debut Notation  
BEAF & Bird's array notation {10,3000000}
Hyper-E notation E(3E6)
Bashicu matrix system (0)(1) (0)(1)
Hyperfactorial array notation (9!)! (10!)!
Fast-growing hierarchy $$f_2(f_2(19))$$ $$f_2(f_2(20))$$
Hardy hierarchy $$H_{\omega^2\times 2}(19)$$ $$H_{\omega^2\times 2}(20)$$
Slow-growing hierarchy $$g_{\omega^{\omega^6\times 3}}(10)$$

## Sources

1. Russ Rowlett's Greek Based -illions
2. Googology
3. Tap Tales,  (accessed 2021-02-11)
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