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A348261
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Decimal expansion of the nontrivial number x for which x^Pi = Pi^x.
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0
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2, 3, 8, 2, 1, 7, 9, 0, 8, 7, 9, 9, 3, 0, 1, 8, 7, 7, 4, 5, 5, 5, 5, 9, 3, 0, 5, 2, 5, 2, 0, 8, 7, 8, 5, 3, 5, 6, 8, 9, 7, 6, 7, 9, 9, 6, 7, 8, 2, 3, 2, 5, 9, 1, 0, 1, 2, 9, 4, 8, 1, 1, 7, 7, 1, 3, 5, 3, 4, 4, 4, 6, 9, 0, 7, 4, 6, 9, 3, 5, 4, 1, 6, 6, 8, 7, 5, 8, 2, 5, 3, 9, 6, 1, 6, 6, 9, 2, 2, 0, 8, 9, 7, 2, 1, 4
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OFFSET
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1,1
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COMMENTS
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The x-th root of x equals the Pi-th root of Pi: x^(1/x) = Pi^(1/Pi) = A073238 = 1.43961949584759... .
Like Pi, is x also transcendental?
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LINKS
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FORMULA
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Equals -Pi*LambertW(-log(Pi)/Pi)/log(Pi). - Alois P. Heinz, Oct 13 2021
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EXAMPLE
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2.382179087993018774555593052520878...
x^Pi = Pi^x = 15.28621734783496640312486439999472... .
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MAPLE
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evalf((t-> -LambertW(-t)/t)(log(Pi)/Pi), 120); # Alois P. Heinz, Oct 13 2021
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MATHEMATICA
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{a, b} = NSolve[x^Pi == Pi^x, x, WorkingPrecision -> 300]; a; RealDigits[N[x/.a, 300]][[1]]
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CROSSREFS
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KEYWORD
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AUTHOR
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STATUS
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approved
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