# Fact! 7 Is Arithmetically Distinct

The number 7 may be so popular due of its mathematical uniqueness. Alex Bellos explains once more: "Seven is the most prime of the first ten numbers. It cannot be multiplied or divided inside the group. It has a distinct vibe." For example, you could multiply 4 by 2 to obtain 8, or divide 10 by 2 to get 5, but you can't do anything with 7.

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