Scalable sequence session prefix size

I have an insert statement that is using a scalable sequence to generate an id.
This insert statement is running in PARALLEL(16) mode. Sometimes duplicate ids are generated because 2 of the 16 sessions doing the insert share the same (session_id%1000) that is used by the scalable sequence to make the session prefix of the sequence.

Is there a way to increase the size of the session prefix in the sequence that would avoid those duplicates ids ?