A075293 Interprimes which are of the form s*prime, s=18.

198, 342, 414, 522, 846, 1062, 1278, 1854, 1962, 2034, 2826, 3006, 3114, 3258, 3582, 4338, 4518, 5706, 6282, 6714, 7758, 8226, 8838, 9054, 11538, 13374, 13518, 14166, 14562, 15354, 15534, 16326, 17838, 18918, 19962, 20718, 20934, 21078, 21258

Offset: 1

Author

Zak Seidov, Sep 12 2002

Keywords

• easy
• nonn

Comments

Interprimes of the form s*prime are in A075277-A075296 ( s = 2 - 21 ). Case s=1 is impossible.

Examples

			414 is an interprime and 414/18 = 23 is prime.
		

Crossrefs

Cf. A075277-A075296.

Programs

Mathematica

s=18; Select[Table[(Prime[n+1]+Prime[n])/2, {n, 2, 4000}], PrimeQ[ #/s]&]