Talk:Primes whose first and last number is 3: Difference between revisions

: I did add a stretch goal to this (draft) task,   but only for the upper limit.   I thought the adding of which leading and trailing decimal digit   (other than using the specific digit   '''3''')   would/might invalidate those existing computer programming solutions what made special tests when using a customized range start,   and/or a special increment.   Certainly,   the adding of any   radix (base)  to be used would add complexity to the requirements and invalidate all existing programming entries.     For instance, one option could/would be to search for primes from   3   to   4000-1   by   10.       Another customization would be to also check for the leading digit and incorporate special handling so as to bump the range to the next     10,   100,   1000, ...       range of integers.     -- [[User:Gerard Schildberger|Gerard Schildberger]] ([[User talk:Gerard Schildberger|talk]])