Why you want to change it to Perin ? :0
The highest Penya size is 2.147.483.647, this is the maximum for a int32.
If you Start a Event and i speak currently from a 50/50 you are over the maximum Penya size, so you automaticly use the Perin(s)...
You are also able to recode it for a int64 with a maximum Penya size of 9.223.372.036.854.775.807
so you can Delete the Useless Perins