I'm trying to calculate the velocity of 10^20 eV cosmic rays, but the precision in Mathematica and Google is not high enough: both give velocities of exactly 1*c.(adsbygoogle = window.adsbygoogle || []).push({});

I've tried putting SetAccuracy[...,1000] around all the constants and the final result, and it still doesnt work. It now gives 1.0000000000000...000*c

I know Mathematica can do this, so what is the proper command?

Thanks.

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# High precision calculation in Mathematica

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