freeradius 1.0.5 - Max-All-Session, Max-Daily-Session and Max-Monthly-Session maximum value limit

[James]

Hello I am using freeradius 1.0.5, what is the maximum value of seconds 
allowed in the attributes: Max-All-Session, Max-Daily-Session and 
Max-Monthly-Session ?

I cannot find this information in my research.

Thank you,

James