It is understood Sunak has used the number for many years (Picture: REX)

Rishi Sunak’s personal mobile number that he has used for several years has been leaked online in what is an embarrassing security breach.

Pranksters targeted the prime minister, who just returned from his travels to the Middle East.

An audio of his phone ringing and his answerphone message responding was shared online, the Sun reported.

It is yet unclear how the information was leaked, and Downing Street said it would not comment on security matters.

The PM has reportedly been using this number for many years.