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The 4-loop QED mass and wave function renormalization constants $Z_2$ and$Z_m$ have been evaluated in the on-shell subtraction scheme with 1100 digitsof precision. We also worked out the coefficients of the five color structuresof the QCD renormalization constants $Z_2^{OS}$ and $Z_m^{OS}$ which canobtained from QED-like diagrams. The results agree with lower precision resultsavailable in the literature. Analytical fits were also obtained for all thesequantities.

High-precision four-loop mass and wave function renormalization in QED