In the RSA encryption algorithm, Bob$$s public key is

Kp$=(107,187).$ Calculate his private key.

$($a$)(5,187)($b$)(3,187)($c$)(2,187)($d$)(107,187)$

$19\mathrm{.}1($a$)($b$)($c$)($d$)$

For the character H$=66$ the cypher text is given by:

$($a$)30($b$)107($c$)187($d$)19$