Hardy-Ramanujan Number/Examples/6,963,472,309,248/Historical Note

Historical Note on Hardy-Ramanujan Number $6 \, 963 \, 472 \, 309 \, 248$

It is widely reported that the $4$th Hardy-Ramanujan number $\map {\operatorname {Ta} } 4$ was discovered by E. Rosenstiel, J.A. Dardis and C.R. Rosenstiel in $1991$.

However, David Wells reports in his Curious and Interesting Numbers, 2nd ed. of $1997$ that this result can be found in the Numbers Count column of Personal Computer World, November $1989$.

Sources

• 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $6,963,472,309,248$