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.
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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.