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A260831 Primes that contain only the digits (5, 7, 9). 3
5, 7, 59, 79, 97, 557, 577, 599, 757, 797, 977, 997, 5557, 5779, 7559, 7577, 7757, 7759, 55579, 55799, 55997, 57557, 57559, 57977, 59557, 59779, 59797, 59957, 59999, 75557, 75577, 75797, 75979, 75997, 77557, 77797, 77977, 77999, 79559, 79579, 79757, 79777 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

A020467, A020468 and A020471 are subsequences.

Subsequence of A030096.

LINKS

Alois P. Heinz, Table of n, a(n) for n = 1..10000

James Maynard and Brady Haran, Primes without a 7, Numberphile video (2019)

MATHEMATICA

Select[Prime[Range[2 10^5]], Complement[IntegerDigits[#], {5, 7, 9}] == {} &]

PROG

(MAGMA) [p: p in PrimesUpTo(2*10^5) | Set(Intseq(p)) subset [5, 7, 9]];

CROSSREFS

Cf. similar sequences listed in A260827.

Cf. A000040, A020467, A020468, A020471, A030096.

Sequence in context: A300090 A324984 A106112 * A268433 A201109 A177336

Adjacent sequences:  A260828 A260829 A260830 * A260832 A260833 A260834

KEYWORD

nonn,easy,base

AUTHOR

Vincenzo Librandi, Aug 03 2015

STATUS

approved

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Last modified July 14 16:21 EDT 2020. Contains 335729 sequences. (Running on oeis4.)