Interesting! Thx. Here's some links: https://en.wikipedia.org/wiki/Lehmer_sieve Wooding 2003 Master's Thesis: Development of a High-Speed Hybrid Sieve Architecture http://pintday.org/kjell/msc/cassiethesis.pdf Wooding 2010 PhD Thesis: The Sieve Problem in One and Two Dimensions http://people.ucalgary.ca/~hwilliam/files/wooding10thesis.pdf At 11:21 AM 9/29/2014, Warren D Smith wrote:

Baker's question was exactly what Lehmer's bicycle-chain sieve and related later machines (Univ. of Manitoba machine based on shift registers) were intended to solve.