A178342 Smallest prime p such that decimals digits 1, ..., k (k = 1, ..., 9) and 0 appear in any order in 3 * p.

5, 7, 41, 14071, 4751, 41521, 4114189, 41115229, 411452263, 3411452263

Offset: 1

Author

Eva-Maria Zschorn (e-m.zschorn(AT)zaschendorf.km3.de), May 25 2010

Keywords

• base
• easy
• fini
• full
• nonn

Comments

See A178341

Semiprime N = 3 * p, p a prime, sod(N) a multiple of 3

Examples

			5 * 3 = 15, 5 = prime(3)
7 * 3 = 21, 7 = prime(4)
41 * 3 = 123, 41 = prime(13)
14071 * 3 = 42213, 14071 = prime(1659)
4751 * 3 = 14253, 4751 = prime(640)
41521 * 3 = 124563, 41521 = prime(4343)
4114189 * 3 = 12342567, 4114189 = prime(290704)
41115229 * 3 = 123345687, 41115229 = prime(2497340)
411452263 * 3 = 1234356789, 411452263 = prime(21913969)
3411452263 * 3 = 10234356789, 3411452263 = prime(163246897)
		

Crossrefs

Cf. A178303, A178341.