Thread
:
541456 and 51456. I checked 20 numbers 2000 times and found 200 patterns!!
View Single Post
2018-12-11, 17:47
#
7
CRGreathouse
Aug 2006
3×1,987 Posts
Quote:
Originally Posted by
enzocreti
2,3,4,7,8,12,19,22,36,46,51,67,79,215,359,394,451,1323,2131,3336,3371,6231,19179=9*2131,39699,51456,56238,69660,75894,79798,92020,174968, 176006,181015,285019,331259,360787,366770,...,541456
Quote:
Originally Posted by
enzocreti
also this is a coincidence: pg(2131) is prime and pg(2131*9) is prime!!!
I think you might be on to something.
pg(36) is prime, and so is pg(36*1935).
pg(67) is prime, and so is pg(67*93).
pg(67) is prime, and so is pg(67*768).
pg(215) is prime, and so is pg(215*324).
pg(215) is prime, and so is pg(215*428).
I discarded the numbers under 36 (to avoid getting easy small multiples) and 541456 (because it wasn't clear if some numbers were skipped). This is far more than the number of multiples expected by chance.
Does this suggest that multiples of earlier terms are more likely, or just that having small factors are more likely? It's not clear to me.
Last fiddled with by CRGreathouse on 2018-12-11 at
17:57
CRGreathouse
View Public Profile
Find More Posts by CRGreathouse