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A057850
Primes p whose order of primeness A078442(p) is at least 8.
12
5381, 52711, 648391, 2269733, 9737333, 17624813, 37139213, 50728129, 77557187, 131807699, 174440041, 259336153, 326851121, 368345293, 440817757, 563167303, 718064159, 751783477, 997525853, 1107276647, 1170710369, 1367161723
OFFSET
1,1
COMMENTS
Union of A058325-A058328, A093046 etc. - R. J. Mathar, Jul 07 2012
LINKS
N. Fernandez, An order of primeness [cached copy, included with permission of the author]
FORMULA
a(n) = A049090(A049090(n)). - James G. Merickel, Feb 14 2010
a(n) = A000040(A057849(n)). - R. J. Mathar, Jul 07 2012
MATHEMATICA
Nest[ Prime, Range[35], 8] (* Robert G. Wilson v, Mar 15 2004 *)
PROG
(PARI) list(lim)=my(v=List(), q, r, s, t, u, vv, w); forprime(p=2, lim, if(isprime(q++) && isprime(r++) && isprime(s++) && isprime(t++) && isprime(u++) && isprime(vv++) && isprime(w++), listput(v, p))); Vec(v) \\ Charles R Greathouse IV, Feb 19 2017
KEYWORD
nonn
AUTHOR
Robert G. Wilson v, Nov 10 2000
EXTENSIONS
Name clarified by Andrew Howroyd, Nov 17 2024
STATUS
approved