[texhax] ?

[File Store]

I did it before correctly lon gtime ago, but right now whatever I do it does
not work,

how can I put prime over a summation with LaTeX

e.g.

$$\sum_{k=1}^{\infty}'$$

this does not look normal, the prime does not look at the correct location

here the prime must be at the right upper edge of the summation symbol.
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