Need to find very large numbers by pow(2,x) x > 2000

Hey all :)
I need some help, i need to get very large numbers, say 2^30000,
i know that none of the available variables can store such numbers, but there has to be some kind of workaround. This isn't a school assignment, i'm just interested in how it should be done.
Thanks in advance :D
That sounds like a case where some sort of large integer library is required. There are various bignumber libraries available.
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