Abstract
We obtain a lower bound on the number of prime divisors of integers whose g-ary expansion contains a fixed number of nonzero digits.
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Shparlinski, I.E. Prime divisors of sparse integers. Periodica Mathematica Hungarica 46, 215–222 (2003). https://doi.org/10.1023/A:1025996312037
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DOI: https://doi.org/10.1023/A:1025996312037