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"Treillion" redirects here. It is not to be confused with trillion.
Not to be confused with Nonillion.

The nanillion is equal to $$10^{3\times10^{9}+3}$$, or $$10^{3\text{ billion }+3}$$.[1] The term was coined by Jonathan Bowers. In the long scale, it has 6 billion zeroes or $$10^{6,000,000,000}$$. It is 3,000,000,004 digits long in short scale, or 6,000,000,001 digits long in long scale.

Nanillion is also known as one milliamilliamilliatillion according to Landon Curt Noll's The English name of a number.

RedBandServerYT gave the name treillion, referring to the short scale value.[2]

## Etymology

The name of this number is based on the suffix "-illion" and SI prefix "nano-".

## Approximations in other notations

Notation Lower bound Upper bound
Scientific notation $$1\times10^{3,000,000,003}$$
Arrow notation $$10\uparrow3,000,000,003$$
Down-arrow notation $$1,000\downarrow\downarrow4$$ $$15\downarrow\downarrow9$$
Steinhaus-Moser Notation 8[3][3] 9[3][3]
Copy notation 2[2[10]] 3[3[10]]
Chained arrow notation $$10\rightarrow3,000,000,003$$
H* function H(H(2))
Taro's multivariable Ackermann function A(3,A(3,30)) A(3,A(3,31))
Pound-Star Notation #*((1))*18396 #*((1))*18397
BEAF $$\{10,3\,000\,000\,003\}$$
Hyper-E notation E3,000,000,003
Bashicu matrix system (0)(1)[5] (0)(1)[6]
Hyperfactorial array notation (11!)! (12!)!
Fast-growing hierarchy $$f_2(f_2(28))$$ $$f_2(f_2(29))$$
Hardy hierarchy $$H_{\omega^22}(28)$$ $$H_{\omega^22}(29)$$
Slow-growing hierarchy $$g_{\omega^{\omega^93+3}}(10)$$

## See also

Main -illions

Generalized intermediate -illions

Unofficial extensions by CompactStar beyond Bowers' system

Humorous extensions

Aarex Tiaokhiao's extensions in Tier 7: redillion · bittersw
Trakaplex's humorous extensions: schmitty · inphix · schmigantic (unfinished) (· helpsophiaisflirtingme (nonexistent) · schmittypleasehelpme (nonexistent)
Redstonepillager's extensions: leet
HaydenTheGoogologist2009's extensions in Tier 10: body · head · hair · face · eye · nose · ear · mouth · lip · teeth · tongu · throat · jaw · neck · shoulder · arm · elbow · hand · nail · chest · back · stomach · kne · ankle · heel · to
XRQ CORPORATION's extensions in Tier 3: googolplex
XRQ CORPORATION's extensions in Tier 4: googolduplex
XRQ CORPORATION's extensions in Tier 5: googoltriplex
XRQ CORPORATION's extensions in Tier 6: termin · aquar · servic · spong · comb · nett · expon · adm · hecr · less · obt · playgr · check · whar · anim · grout · oreg · tront · shelf · liqu · jew · glob · ium · xiff · wemct · mibd · homr · ultim · var · squeez · tebilpictr · has · nogd · aur · trakers · icot · unth · queyn · enqu · tsun · nunt · zazt · ninj · banan · karm · guav · pizz · vist · umbrell · lav

*not Bowers'
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