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 A276199 Smallest prime that begins with at least n digits of Pi. 1
 3, 31, 31469, 314107, 314159, 314159, 314159207, 3141592603, 31415926541, 314159265307, 314159265359, 3141592653581, 314159265358909, 3141592653589711, 31415926535897921, 314159265358979347, 3141592653589793239, 3141592653589793239, 314159265358979323861 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Dana Jacobsen, Table of n, a(n) for n = 1..997 (first 28 terms from José Eduardo Gaboardi de Carvalho) EXAMPLE a(7) = 314159207, begins with first 7 digits of Pi = 3.141592653... PROG (Perl) use ntheory ":all"; sub a276199 { my \$l=shift; my \$p="3".substr(Pi(\$l+20), 2, \$l-1); for my \$dig (0 .. 20) { my \$add = "0" x \$dig; do { return "\$p\$add" if is_prime("\$p\$add"); } while length(++\$add) == \$dig; } } # Dana Jacobsen, Aug 30 2016 CROSSREFS Cf. A005042. Sequence in context: A261472 A144964 A168678 * A118913 A297480 A282973 Adjacent sequences:  A276196 A276197 A276198 * A276200 A276201 A276202 KEYWORD nonn,base AUTHOR José Eduardo Gaboardi de Carvalho, Aug 24 2016 STATUS approved

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Last modified May 13 12:02 EDT 2021. Contains 343839 sequences. (Running on oeis4.)