33,550,336/Historical Note

Historical Note on $33 \, 550 \, 336$

The earliest record of the perfect nature of $33 \, 550 \, 336$ is in a medieval manuscript dating from $1456$.

When Hudalrichus Regius demonstrated in $1536$ that both $511 = 2^9 - 1$ and $2047 = 2^{11} - 1$ are composite, it was confirmed as being the $5$th perfect number.


Sources

  • 1919: Leonard Eugene Dickson: History of the Theory of Numbers: Volume $\text { I }$ ... (previous) ... (next): Preface
  • 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $33,550,336$
  • 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $33,550,336$
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