A284290 Primes containing a digit 4.

41, 43, 47, 149, 241, 347, 349, 401, 409, 419, 421, 431, 433, 439, 443, 449, 457, 461, 463, 467, 479, 487, 491, 499, 541, 547, 641, 643, 647, 743, 941, 947, 1049, 1249, 1409, 1423, 1427, 1429, 1433, 1439, 1447, 1451, 1453, 1459, 1471, 1481, 1483, 1487, 1489

Offset: 1

Author

Jaroslav Krizek, Mar 24 2017

Keywords

• base
• nonn

Comments

Subsequence of A011534 and A062669.

Links

• Amiram Eldar, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. Primes containing a digit k for k = 0 - 9: A056709 (k = 0), A208270 (k = 1), A208272 (k = 2), A212525 (k = 3), A284290 (k = 4), A257667 (k = 5), A284291 (k = 6), A257668 (k = 7), A284292 (k = 8), A106093 (k = 9).

Programs

Magma

[p: p in PrimesUpTo(10000) | 4 in Intseq(p)]

Mathematica

Select[Range[1500], PrimeQ[#] && MemberQ[IntegerDigits[#], 4] &] (* Amiram Eldar, Nov 09 2019 *)