A106107 -id:A106107 - cp's OEIS frontend

A106110 Primes having only {7, 8, 9} as digits.

7, 79, 89, 97, 787, 797, 877, 887, 977, 997, 7789, 7877, 7879, 8779, 8887, 8999, 9787, 9887, 77797, 77899, 77977, 77999, 78779, 78787, 78797, 78877, 78887, 78889, 78977, 78979, 78989, 79777, 79889, 79979, 79987, 79997, 79999

Offset: 1

Zak Seidov, May 07 2005

Jason Bard, Table of n, a(n) for n = 1..10000
Andrew Granville, Missing digits, and good approximations, arXiv:2308.03126 [math.NT], 2023. See p. 2.
Index to entries for primes with digits in a given set

Cf. A106107, A106111, A106112.

Select[Prime[Range[8000]], Min[IntegerDigits[ # ]]>6&]

Name changed by Sean A. Irvine, Jul 20 2025

A284068 Numbers whose smallest decimal digit is 7.

Original entry on oeis.org

7, 77, 78, 79, 87, 97, 777, 778, 779, 787, 788, 789, 797, 798, 799, 877, 878, 879, 887, 897, 977, 978, 979, 987, 997, 7777, 7778, 7779, 7787, 7788, 7789, 7797, 7798, 7799, 7877, 7878, 7879, 7887, 7888, 7889, 7897, 7898, 7899, 7977, 7978, 7979, 7987, 7988, 7989

Offset: 1

Jaroslav Krizek, Mar 23 2017

Numbers n such that A054054(n) = 7.

Prime terms are in A106107.

Cf. Sequences of numbers whose smallest decimal digit is k (for k = 0..9): A011540 (k = 0), A284062 (k = 1), A284063 (k = 2), A284064 (k = 3), A284065 (k = 4), A284066 (k = 5), A284067 (k = 6), this sequence (k = 7), A284069 (k = 8), A002283 (k = 9).

[n: n in [1..100000] | Minimum(Setseq(Set(Sort(&cat[Intseq(n)])))) eq 7]

Select[Range[8000], Min[IntegerDigits[#]] == 7 &] (* Giovanni Resta, Mar 23 2017 *)

isok(n) = vecmin(digits(n)) == 7; \\ Michel Marcus, Mar 25 2017

cp's OEIS Frontend

A106110 Primes having only {7, 8, 9} as digits.

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