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Erdős problem 416

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Let V(x) count the number of n≤x such that ϕ(m)=n is solvable. V(x)=x/logx * e^((C+o(1))(log log log x)^2), for some explicit constant C>0. Ref:Maier, Helmut and Pomerance, Carl, _On the number of distinct values of Euler's ϕ\phi-function_.

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Problem row
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Metadata
sha256:079405c9e543425e4aa1fcee55d4e8b2445225b59b9a97fc8b4dc5798506f5cf
Observation
sha256:9c8326e865b6017b103af7611c852a06776d81964979b8ab5a1b800cd550dff6
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sha256:d7553474712fee0dd039d81d6d06cccf75a7dc7476c6f975ecdb25fef60140c8
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sha256:a956b84c437202e5a02cc9e036a621bd14a302b34a75758115730bdbb77c52a4
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sha256:a4a96441668a9f8b33afbcb3f696a2639f5fae145f36ddc063d7f67d5fb87ce8
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36c6d0fef71a3fec84d9dcd5eeca4e22e378f7cb
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