The book is now available! 19156...69216 (54-digits)
(just those submitted by Gupta)
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                 1915 6194260823 6107294793 3780843036 3813099732 1548169216

Just showing those entries submitted by 'Gupta': (Click here to show all)

+ The smallest perfect number which contains each of the ten decimal digits at least once. [Gupta]

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