Product of repdigits with consecutive lengths in the Fibonacci sequence.

2021 
From the well-known Fibonacci sequence, the number $$F_{10}=55=5\cdot 11$$ is an example not only as a repdigit (a number with only one distinct digit) but also as a product of two repdigits with consecutive lengths, 5 and 11. Here we find all the Fibonacci numbers that can be written as the product of k repdigits with consecutive lengths.
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