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45 (another Prime Pages' Curiosity) |
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Single Curio View: (Seek other curios for this number) The only known multidigit number n (up to 10^9) such that, n = reversal(sigma(n) - phi(n)) = reversal(sigma(n)) - reversal(phi(n)). [Capelle]
Submitted: 2009-11-15 13:12:46; Last Modified: 2009-11-15 14:03:06.
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