title: How do I convert 64-bit hexadecimal strings in R?
body: <p>How do I convert 64-bit hexadecimal strings in R?</p>
  
  <pre><code>&gt; library(int64)
  &gt; as.int64("7f2d36a2a000")
  [1] NA
  Warning message:
  In as.int64("7f2d36a2a000") : NAs introduced
  &gt; as.int64("0x7f2d36a2a000")
  [1] NA
  Warning message:
  In as.int64("0x7f2d36a2a000") : NAs introduced
  </code></pre>