How do I find Secret ID of a certain Pokemon?

[HypermanEX]

I have Pokesav'd nearly most of my Pokemon, but the problem is that I changed my Secret ID to be the same as my Trainer ID. I still have my original Victini however, and after using programs like SCV's PID generator, I got this.

1>Ultra-rare GBA:2377822195

Nature:Calm

Ability:1

Gender Value:243

Hidden Power:Flying-69

Is there a quicker way to do this, or can someone help me continue deducing these numbers to find my original Secret ID?

[Kaphotics]

pokecheck.kraftpaper.org