〈 Berger | Dillon 〉

I can tweet: 2^82,589,933 − 1 which is much larger and still have characters to spare in the tweet!

Indeed. Maybe cheating? What about this? 0x4683F19A2AB1BF596D85A43DB211F0F43F631B987A805A03533E83969E3FD0A5FEBE6B7631777675326E77559A8577C152246FF58CF3CDE58DE2B59E8C68B345177626FA1F93BD9E79BE47D6F6C5CD4E9A0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFDE5

What's the best way of finding it? Could I use my @MATLAB function for the Sieve of Eratosthenes up to the character limit of a tweet? (of course, change data type from Double)

Maybe start at the other end (the largest tweetable number), and work your way down until you find the first prime, which evidently will happen after fewer than 1000 numbers to test