[seqfan] Re: A269254

[Hans Havermann]

> subsequent unknowns are: 123, 488, 702, 721, 735, 947, 1284, 1298, 1518, 1524, 1543, 1602, 1661, 1961, 2024, 2072, 2075, 2078, 2104, 2129, 2158, 2185, 2192, 2223, 2345, 2372, 2412, 2415, 2478, 2484, ...

If I read Andrew Hone's message correctly, 488, 702, 1298, and 2158 may be eliminated from that list. I've checked 123 for more than 10000 steps without yielding a prime, so it remains an obstacle to a significantly larger b-file.