Calculating Levels in Lightroom

Suppose I edit a raw file in Photoshop with levels as follows:

black 5 midpoint 1.61 whites 171

What are the Lightroom equivalents of these values? Is there a mathematical formula that converts from Photoshop’s black, white, and midpoint slider values to Lightroom’s Exposure, Blacks, Recovery, Fill Light, Brightness, and Contrast sliders?

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