First semiprime gaps without primes

Jack Brennen jb at brennen.net
Sun Dec 23 10:51:05 CET 2007


zak seidov wrote:
> First semiprime gaps without primes
> {s1,s2,s1-s2}
> {9,10,1}
> {49,51,2}
> {62,65,3}
> {403,407,4}
> {341,346,5}
> {843,849,6}
> {6722,6729,7}
> {3473,3481,8}
> {2869,2878,9}
> {14059,14069,10}
> {18467,18478,11}
> {26603,26615,12}
> {172381,172394,13}
> {41779,41793,14}
> {74491,74506,15}
> {192061,192077,16}
> {463161,463178,17}
> {226489,226507,18}
> {344119,344138,19}
> {517421,517441,20}
> {943606,943627,21}
> {584213,584237,24}
> Gaps 22,23 and >24 not found else.
> Anyone may wish to contribute?


Your gap of length 13 is not the smallest.  Should be:
{166126,166139,13}

Other than that, here's some other gaps out to ~48 million,
the complete set up to a gap of 36...

Feel free to sort and format them the way you want:

22 2171131 2171153
25 2560177 2560202
26 4356633 4356659
23 4577519 4577542
30 7319797 7319827
27 8367139 8367166
32 10644122 10644154
28 11174753 11174781
29 13191293 13191322
33 13683034 13683067
36 26837363 26837399
31 27841051 27841082
34 29492893 29492927
35 47735342 47735377







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