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5 (another Prime Pages' Curiosity) |
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Single Curio View: (Seek other curios for this number) There are 5 natural numbers n such that n is equal to the number of 5's in the decimal digits of all natural numbers smaller or equal to n. [Capelle]
Submitted: 2009-08-10 00:01:31; Last Modified: 2009-08-10 01:59:00.
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