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89 (another Prime Pages' Curiosity) |
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Single Curio View: (Seek other curios for this number) 89 = prime(phi(8)*phi(9)) = prime(phi(sigma(89))), so phi(sigma(89)) = phi(8)*phi(9). [Firoozbakht]
Submitted: 2009-05-17 07:28:51; Last Modified: 2009-05-17 07:50:17.
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