Numbers n whose Euler Phi value Divides n + 1/Historical Note

Historical Note on Numbers $n$ whose Euler Phi value Divides $n + 1$
This result appears in an article from $1932$ by, where he performs a complete analysis of the situation where $k \map \phi n = n + 1$ where $n$ has fewer than $7$ distinct prime factors.

It appears that may have made the same observation, as  attributes it to him (without providing a citation) in a note in his  of $1994$.

Interestingly, while citing 's $1932$ article in the context of a conjecture about $k \map \phi n = n - 1$, appears to completely fail to notice his analysis of $k \map \phi n = n + 1$.

In his of $2004$, he does now report on 's $1932$ article, but continues to credit  with the observation that $83 \, 623 \, 935 \times 83 \, 623 \, 937 \times \paren {83 \, 623 \, 935 \times 83 \, 623 \, 937 + 2}$ would also be a solution if $83 \, 623 \, 935 \times 83 \, 623 \, 937 + 2$ were prime.

However, again, the latter result also appears in 's $1932$ article.

In, then reports that  established that $83 \, 623 \, 935 \times 83 \, 623 \, 937 + 2 = 6 \, 992 \, 962 \, 672 \, 132 \, 097$ is not prime, as it has $73$ as a prime factor.