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   T H E   C E N T E N N I A L

✨ The Centennial ✨

A celebration of the number one hundred

Today 100 Facts 100 Things History Mathematics World About

🎉 Welcome to The Centennial

Today is day 121 of 2026.

It has been 21 days since day 100.

The Significance of 100

100 is the first three-digit number. It's the square of 10, the basis of our decimal system. It represents completeness, totality, perfection. When we give "100%," we give everything we have.

Did You Know?

Visual: Counting to 100

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Each cell represents one day. ★ marks today (or the first 100).

Explore More

Use the buttons above to explore 100 facts, 100 small pleasures, the history and mathematics of 100, and how 100 appears around the world.

100 as Poetry

One hundred:
    ten tens,
    four quarters of a quarter of four hundred,
    the square root of ten thousand,
    enough to feel like a lot
    but still small enough to count.