ed pegg <ed@mathpuzzle.com> wrote:

Two consecutive primes can have a product giving a concatenation of consecutive integers. Two simple examples are43?47 = 20~21

891077215721081784886888257701070827?891077215721081784886888257701070829 =? 794018604377235322848433897872605582~794018604377235322848433897872605583??

I'm curious how you found the latter, and whether you're claiming those are the first two examples, or whether there could be another example between them. (As I've mentioned before, non-ASCII characters appear on the digest option as question marks. It's obvious that two of the question marks were intended as multiplication signs, but I'm curious what they other three were intended to be. Thanks.)