User blog comment:Legionwrex/I figured out how many Reapers there are!/@comment-4950455-20120801013113

Personally, I think this is actually the strongest argument against the Reapers operating on a regular 50,000-year schedule in the first place. At no point in the games are we given any reason to believe there's tens of thousands of Reapers - certainly there's a lot, but cutscenes and Codex entries suggest that they don't have a major numerical advantage over the Citadel races (who certainly don't number their forces in the tens of thousands).