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A lakh is equal to 100,000, one tenth of million, or 105. It is used in the Indian naming system. 100 lakh is one crore. Larger numbers are sometimes combinations of both, a lakh crore for example equal to one trillion. 1000 lakh is one myllion in the myriad system.

Aarex Tiaokhiao calls this number qoonol, 5-noogol, or goonaoltrult, and it's equal to a(10,100,0)x in Aarex's Array Notation.

Username5243 calls this number niloogolduplex or gooqnol, and it's equal to 105 in Username5243's Array Notation.

In the German language, 100,000 is sometimes called "Zehntelmillion".

## Currency-related use An Indonesian 100,000 rupiah bank note.

Some currencies, such as the Indonesian rupiah and the Vietnamese đồng, have banknotes with this number in the denomination.

It was also the prize for correctly answering the first question in the Italian game show Chi vuol essere miliardario? in Italian lire.

Furthermore, it was also the prize for correctly answering the first five questions in the Japanese game show Quiz \$ Millionaire in Japanese yen.

## In politics

In Germany, municipalities with at least 100,000 inhabitants are called Großstadt.

## Approximations

Notation Lower bound Upper bound
Scientific notation $$1\times10^5$$
Arrow notation $$10\uparrow5$$
Steinhaus-Moser Notation 6 7
Copy notation 9 1
Taro's multivariable Ackermann function A(3,13) A(3,14)
Pound-Star Notation #*(32)*3 #*(2)*13
BEAF {10,5}
Hyper-E notation E5
Bashicu matrix system (0) (0)
Hyperfactorial array notation 8! 4!1
Fast-growing hierarchy $$f_2(12)$$ $$f_2(13)$$
Hardy hierarchy $$H_{\omega^2}(12)$$ $$H_{\omega^2}(13)$$
Slow-growing hierarchy $$g_{\omega^5}(10)$$