  In this paper the Sumudu transforms of Hilfer-Prabhakar fractional derivative
and regularized version of Hilfer-Prabhakar fractional derivative are obtained.
These results are used to obtain relation between them involving Mittag-
Leffler function. Also these results are applied to solve some problems in
physics. Here the solutions of problems involving Hilfer-Prabhakar fractional
derivative and regularized version of Hilfer-Prabhakar fractional derivative
are obtained by using Fourier and Sumudu transform techniques.
