to use turbo shift click the green arrow. Once you do that it should say turbo mode in orange next to the arrow. it also calculates the average of the digits in the ones place of all the primes on the list. the MAX is the maximum average and is set at the maximum average I have calculated so far, but it will update if you record one higher. It seems to converge to 5.
with the average and max mods it goes slower.
