I'm trying to do this as part of way to provide the participant number from within a text string that's displayed within a question as a way to provide the participant with a number that will permit them to redeem a participant incentive from elsewhere.

Thanks in advance.

Hi,
if the survey is not set to "anonymous" you have access to the entries of the participant table.
I'm not sure if you may get the participant ID, but you may add an attribute to each participant which you display in your survey.

Or you use something like the {SAVEDID}. This is the sequential number of answers in the answer table.

Joffm

First of all, you need to define what you refer to as "participant number".

As Joffm said, is this the token? Is it the sequential number that Limesurvey is giving to each response? What do you call "participant number""?

It was intended to be the sequential number that Limesurvey is giving to each response. What Joffm suggested (placed within an equation question) seems to work.
Thanks

It was intended to be the sequential number that Limesurvey is giving to each response.

Yes, then Joffm's tip with {SAVEDID} is the way to go. That was easier than expected...