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One more oddity I just found out Phi (1.61803399) has a multiplicative inverse known as phi(.61803399). The strange thing is these are the only 2 numbers whose multiplicative inverses vary by exactly one.
Phi/phi are irrational numbers, that is they cannot be written as a fraction and their decimals go one forever without repeating. The fact that Phi's multiplicative inverse is exactly 1 less is amazing.
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