[Haskell] Generator Function for Prime Numbers

[Dave at haskell.org]

I have heard that a generator function has been found that generates
prime numbers directly using only addition and subtraction. There
purportedly have been presentations of this information to selected
mathematicians who have verified that the generator function works.
But I haven't found any confirmation by googling. Has anyone got
wind of this?

Thanks,
Dave Feustel