The blastomlastillion is equal to 103,003,000.[1] The term was coined by Aarex Tiaokhiao.


Notation Lower bound Upper bound
Scientific notation \(1\times10^{3\,003\,000}\)
Arrow notation \(10\uparrow3\,003\,000\)
Steinhaus-Moser Notation 6[3][3] 7[3][3]
Copy notation 2[2[7]] 3[3[7]]
Taro's multivariable Ackermann function A(3,A(3,20)) A(3,A(3,21))
Pound-Star Notation #*((75))*706 #*((76))*706
BEAF {10,3003000}
Hyper-E notation E3,003,000
Bashicu matrix system (0)(1)[20] (0)(1)[21]
Hyperfactorial array notation (9!)! (10!)!
Fast-growing hierarchy \(f_2(f_2(19))\) \(f_2(f_2(20))\)
Hardy hierarchy \(H_{\omega^22}(19)\) \(H_{\omega^22}(20)\)
Slow-growing hierarchy \(g_{\omega^{\omega^63+\omega^33}}(10)\)


  1. Tiaokhiao, AarexFull list of my illion. Archived from the original on 2016-04-11. Retrieved 2016-08-17.