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Self Power to Googol (Posted on 2023-03-27) Difficulty: 3 of 5
Find x such that

xx = 10100

See The Solution Submitted by Charlie    
Rating: 5.0000 (1 votes)

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Some Thoughts a rough approximation using basic principles Comment 4 of 4 |
Noting that (y^(sqrt(x)))^((z/x)sqrtx) = y^z, we just need to work out 10^sqrt(x) and ((100/x)*sqrt(x)), without any larger numbers.

10^100=(10^2)^50 100^50 which is the closest integer variant
10^100=10^(sqrt2)^((100/2)*sqrt2)           around 26^71
10^100=(10^(sqrt3))^(100/(3)*sqrt(3))           around 54^58
10^100=(10^(sqrt3.05))^(100/(3.05)*sqrt(3.05)) around 56^57

Using direct evaluation, WolframAlpha gives 

10^sqrt(x)=((100/x)*sqrt(x)), x ≈ 3.08205937..., when 10^sqrt(x)≈ 56.9612

  Posted by broll on 2023-03-28 00:18:18
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