A076623 decomposed

I've been busy with a number of ongoing projects. I'm quite proud of my "number of left-truncatable primes by digit length" which I web-published yesterday and extended today. I still want to get actuals for bases 73, 32, 28, 79, 55, 83, 34, 89, 51, 65, 38, and (finally) 24, but it'll take a couple of months.

August 2011: They're all done! I've put a summary of bases tackled (with specifics) here.