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... A Niven number is a number divisible by its digital sum. In [1] it is shown there can exist at most twenty consecutive Niven numbers; moreover, an infinite family of such is constructed where the first example requires over 4 billion digits. Here we get a lower bound on the number of digits in each ...
... A Niven number is a number divisible by its digital sum. In [1] it is shown there can exist at most twenty consecutive Niven numbers; moreover, an infinite family of such is constructed where the first example requires over 4 billion digits. Here we get a lower bound on the number of digits in each ...
