

A109986


Primes ordered alphabetically by where they occur in A000052.


4



5, 7, 3, 2, 89, 83, 11, 59, 53, 41, 47, 43, 19, 97, 17, 79, 71, 73, 61, 67, 13, 31, 37, 29, 23, 881, 887, 883, 811, 859, 857, 853, 809, 877, 863, 839, 829, 821, 827, 823, 587, 557, 541, 547, 509, 599, 593, 571, 577, 569, 563, 503, 521, 523, 487, 457, 449, 443
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OFFSET

1,1


COMMENTS

A109987 is semiprimes ordered alphabetically by where they occur in A000052. A109988 is 3almost primes ordered alphabetically by where they occur in A000052.


LINKS

Robert Israel, Table of n, a(n) for n = 1..10000


EXAMPLE

a(1) = 5 because five is the first prime in alphabetical order.
a(5) = 89 because eightynine is the first 2digit prime in alphabetical order.


MAPLE

V:= [seq(select(isprime, [$10^i..10^(i+1)1]), i=0..3)]:
seq(op(V[i][sort(map(convert, V[i], english, 'And'),
output=permutation)]), i=1..nops(V)); # Robert Israel, Jun 17 2016


MATHEMATICA

alph = Last /@ Import["https://oeis.org/A000052/b000052.txt", "Table"]; Take[
Select[alph, PrimeQ], 58] (* Giovanni Resta, Jun 17 2016 *)


CROSSREFS

Cf. A000040, A000052, A109987, A109988.
Sequence in context: A058176 A155158 A241140 * A245741 A175473 A180079
Adjacent sequences: A109983 A109984 A109985 * A109987 A109988 A109989


KEYWORD

base,easy,nonn,word


AUTHOR

Jonathan Vos Post, Jul 07 2005


EXTENSIONS

Corrected and extended by Giovanni Resta, Jun 17 2016


STATUS

approved



