One hundred million
2 × 5
100000000th (one hundred millionth)
100 000 000 years from now
One hundred million (100,000,000) is the natural number following 99,999,999 and preceding 100,000,001.
In scientific notation, it is written as 108.
East Asian languages treat 100,000,000 as a counting unit, significant as the square of a myriad, also a counting unit. In Chinese, Japanese, and Korean respectively it is yì (億) (or wànwàn 萬萬 in ancient texts), oku (億), and eok (억/億). These languages do not have single words for a thousand to the second, third, fifth power, etc.