'Mining' at 5,000 primes/sec, any calculators to estimate average time to find a block?
It doesn't directly relate. One machine, say a laptop maybe, could go seemingly forever without finding any blocks way back when this thing started, while showing larger PPS than other machines, not laptops, that did fine.
Its not so much how many primes you line up to work with maybe as whether you can actually work with them well once you do have them lined up and counted?
People cited way back when various changes they made that could make PPS skyrocket while making the chance of actually finding a block drop drastically.
So maybe on some systems you'd actually want to lower your PPS in order to increase the chance of finding a block.
Its a poor indicator. Thats why other indicators were added to the debug.log in the performance version/fork/branch, so people can try to research whether any of those might be maybe at least a little more related to the chance of finding a block.
I think maybe the best mining calculator would be to look at the top profitable coins on those find the most profitable coin websites and plug us in at number four or worse so everyone who is really into predictions will run off to one or more of the top three. That might help those of us still here a lot!

-MarkM-