# Is the Glaisher–Kinkelin constant transcendental?

As the title says, is it known whether or not the Glaisher constant is a transcendental number?

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Is it known to be irrational? That would perhaps be the first step in the proof. For those who wonder what it is: mathworld.wolfram.com/Glaisher-KinkelinConstant.html –  GEdgar Aug 29 '12 at 20:40
Then there is the conjecture that any naturally generated constant that is not obviously rational or algebraic (by its construction, such as the square root of two) is transcendental. I don't think putting a bounty on this will help. –  marty cohen Aug 29 '12 at 22:16