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 A052999 Take n-th prime p, let P(p) = all primes that can be obtained by permuting the digits of p and possibly adding or omitting zeros; a(n) = |p-q| where q in P(p) is the closest to p but different from p (a(n)=0 if no such q exists). 5
 0, 0, 0, 0, 90, 18, 54, 90, 1980, 199980, 18, 36, 360, 3960, 3960, 450, 450, 540, 540, 36, 36, 18, 79999999999999999999999999999920, 720, 18, 90, 72, 36, 90, 18, 144, 18, 36, 54, 270, 900, 414, 450, 450, 36, 18, 630, 720, 54, 18, 720, 810, 1980, 1800, 1800, 2790, 54, 180, 270, 20250, 1800, 1800, 144 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,5 COMMENTS Conjecture: a(n) > 0 for n > 4. - Sean A. Irvine, Nov 23 2021 LINKS EXAMPLE a(6)=18 since 6th prime is 13 and 31-13=18. a(9)=1980 because 9th prime is 23 and the smallest prime in P(6) different from 23 is 2003; 2003-23=1980. a(23)=(8*10^31+3)-83 because 8*10^31+3 is closest prime distinct from 83 but in P(83). - Sean A. Irvine, Nov 23 2021 CROSSREFS Cf. A052902, A052998, A053544, A052495, A052484. Sequence in context: A078293 A247899 A247902 * A050662 A236180 A332427 Adjacent sequences: A052996 A052997 A052998 * A053000 A053001 A053002 KEYWORD base,easy,nonn AUTHOR N. J. A. Sloane, Mar 16 2000 EXTENSIONS More terms from Asher Natan Auel (auela(AT)reed.edu), May 12, 2000 a(23) corrected by Sean A. Irvine, Nov 23 2021 STATUS approved

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Last modified January 29 06:03 EST 2023. Contains 359915 sequences. (Running on oeis4.)