axis values for custom points in listplot

Let’s say I have a listplot like so:

ListPlot[Prime[Range[25]]]

I want my plot to mark the x,y values for the values associated with say, the 5th, and 10th points in the input. I would be interested in any of the following:

• marking simply the y values so have 11 and 29 in the y axis
• marking both x and y axis: ie show {5,11} and {10,29} in the x and y axis respectively.

with, or without perpendicular lines connecting the points to axes.

The point of this, is to give the reader of the plot, a sense of scale for given points of interest.

Do I have to superimpose different plots on each other or can I do it by some config on the listplot itself?

With[
  {
    points = Table[{n,Fibonacci[n]}, {n, 7}],
    sampleValues = {1,5,7}
  },
  ListPlot[
    points,
    Joined -> True,
    Ticks -> {sampleValues , points[[All,2]][[sampleValues]]},
    Epilog -> {
      Dashed,
      {
        Line[{Projection[points[[#]], {1,0}], points[[#]]}], (*X-axis projection*)
        Line[{Projection[points[[#]], {0,1}], points[[#]]}]  (*Y-axis projection*)
      } & /@ sampleValues
    }
  ]
]