jetpack joyride - What is the meaning of these numbers under the 'Prestige' medals? - Arqade

Under the 'Prestige' medals in Jetpack Joyride is a number accompanying the medal (#87 and #38 in the photo below). Do these numbers have a meaning, or are they just random?

PHYSICS: The Real-Life Rocket Science of Jetpack Joyride

Badges - Jetpack Joyride Guide - IGN

Gemology, Jetpack Joyride Wiki

Jetpack Joyride blakekerosenereviews

Jetpack Joyride - All medals gained after thousand of matches

Sail the seven seas in new Jetpack Joyride pirate event

Badges, Jetpack Joyride Wiki

AR 59 and I just realized the Claim Adventure Rank rewards layout

Vehicles, Jetpack Joyride Wiki

Hidden achievements in Jetpack Joyride - Arqade

Bling It On!, Jetpack Joyride Wiki