For each set of k-digit numbers, has anyone bothered to find exactly the number containing two distinct prime factors each with exponents greater than zero and the sum of all such numbers for each set? Thus one would seek for 2-digit numbers 10,12,14...96, 98, 99 and the sum of them when added.
2026-05-06 11:28:20.1778066900
numbers with two distinct prime factors
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