Do you know what is interesting about the number 1729?
That’s right: it’s the third Zeisel number, a number given by 
, where 
and 
are the distinct prime factors, related by the recurrence relation 
. For example, A and B are 1 and 6 for 1729 since 1+6 = 7, 7+6 = 13, 13+6 = 19, and 
.
, where and are the distinct prime factors, related by the recurrence relation . For example, A and B are 1 and 6 for 1729 since 1+6 = 7, 7+6 = 13, 13+6 = 19, and .Write a function to determine whether a number is a Zeisel number. If it is, return the values of A and B. If not, set A and B to NaN.
Solution Stats
Problem Comments
2 Comments
Solution Comments
Show comments
Loading...
Problem Recent Solvers8
Suggested Problems
-
Find state names that end with the letter A
1198 Solvers
-
Is my wife right? Now with even more wrong husband
1348 Solvers
-
Flip the main diagonal of a matrix
923 Solvers
-
588 Solvers
-
How long is the longest prime diagonal?
413 Solvers
More from this Author328
Problem Tags
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
In Firefox and Bing, the TeX writing is displaced below the rest of the line. Does anyone have a fix?
@Chris I'm seeing that too (using Chrome). I guess it's a server-side problem.