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100,000,000, known as one hundred million, is the integer that equals 10^8 in scientific notation. In decimal form it is written as 100,000,000 and has nine digits. It is a standard round figure in base-10 arithmetic and often used as a milestone in statistics and budgeting.

In mathematical terms, 100,000,000 factors as 2^8 × 5^8, since it is (2 × 5)^8 = 10^8. It is also a perfect square, equal to (10,000)^2. This makes it a convenient example of a decimal square with a simple prime factorization and a symmetrical representation in base-10.

In practical contexts, 100,000,000 appears as a scale point in economics, population studies, and data measurement. For example, computer storage is sometimes discussed in bytes: 100,000,000 bytes is roughly 95.37 mebibytes (MiB) and exactly 0.1 gigabytes (GB) when using decimal gigabytes (1 GB = 10^9 bytes). In population or production figures, rounds like 100 million are often used to convey large magnitudes succinctly.

The number is also a natural reference point in education and programming as a large, easy-to-grasp decimal benchmark. In numeral systems beyond base-10, 100,000,000 maintains its status as a straightforward power-of-ten value, representing a central tier between hundreds of millions and billions.