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 A090191 Asymmetric primes: an odd prime p is asymmetric if there is no odd prime q such that |p-q|=gcd(p-1,q-1). 3
 23, 47, 83, 167, 173, 263, 359, 383, 389, 467, 479, 503, 509, 557, 563, 587, 653, 719, 797, 839, 863, 887, 907, 971, 983, 1103, 1187, 1259, 1283, 1307, 1367, 1439, 1499, 1511, 1523, 1571, 1579, 1637, 1733, 1823, 1907, 1913, 2039, 2063, 2099, 2203, 2207 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Charles R Greathouse IV, Table of n, a(n) for n = 1..10000 P. Fletcher, W. Lindgren and C. Pomerance, Symmetric and asymmetric primes, J. Number Theory 58 (1996) 89-99. Carl Pomerance, Symmetric primes revisited, arXiv:1908.06161 [math.NT], 2019. EXAMPLE 23 is asymmetric since gcd(22,q-1)=2<23-q for all odd primes q<23, gcd(22,22)=22>0 and gcd(22,q-1)=22 \\ Charles R Greathouse IV, Aug 08 2016 CROSSREFS Complement gives A090190. Sequence in context: A292509 A117876 A338386 * A281022 A054821 A195058 Adjacent sequences:  A090188 A090189 A090190 * A090192 A090193 A090194 KEYWORD nonn AUTHOR Steven Finch, Jan 21 2004 EXTENSIONS More terms from Robert G. Wilson v, Sep 19 2004 STATUS approved

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Last modified November 28 04:31 EST 2021. Contains 349400 sequences. (Running on oeis4.)