Time Capsule

You neither need 35 years nor even 20 years to solve this problem!

Challenge

The goal is basically to compute $l = 2^{2^{t}} (\mod n)$ .

Note that $2^{x} \equiv 2^{x (\mod ϕ (n))} (\mod n)$

$n$ is easily factored with yafu, and the calculation is trivial from there

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