# 6/Historical Note

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## Historical Note on $6$

The number **$6$** was associated by the Pythagoreans with **health**.

It was also, like **$5$**, associated with **marriage**, as it is the product of $2$, the first female number, and $3$, the first male number.

It also stood for **equilibrium**, its symbol being two triangles placed base to base:

The number **$6$** was also believed by the Pythagoreans to be **perfect**, as it was the sum of:

The fact that $1 + 2 + 3 = 1 \times 2 \times 3$ added to its mystique.

*Six is a perfect number in itself ... God created all things in six days because this number is perfect. And it would remain perfect, even if the work of six days did not exist.*- -- as reported by Ludwig Bieler

## Sources

- 1986: David Wells:
*Curious and Interesting Numbers*... (previous) ... (next): $6$ - 1992: George F. Simmons:
*Calculus Gems*... (previous) ... (next): Chapter $\text {A}.2$: Pythagoras (ca. $\text {580}$ – $\text {500}$ B.C.) - 1997: David Wells:
*Curious and Interesting Numbers*(2nd ed.) ... (previous) ... (next): $6$