I am not too up to date on religions, but here is my GUESS.
The first number is available to all members of the religion, while the "show spread" is only available to elders/priests?
This being the case (if it is actually the case), the second set of numbers that is reserved for the "higher-ups" would more likely be more accurate.
If the first set of numbers is available to any that join the religion, it is likely that they are more skewed to prevent specific knowledge from leaking to other sources.
