A167839 Five-times-isolated primes: primes p such that none of (p-10,p-8,p-6,p-4,p-2,p+2,p+4,p+6,p+8,p+10) are prime.

2, 211, 1511, 1847, 2179, 2503, 2579, 2633, 2819, 2939, 3137, 3271, 3433, 3659, 3967, 3989, 4111, 4177, 4409, 4621, 4691, 4703, 4831, 4889, 5039, 5209, 5261, 5623, 5939, 5953, 6619, 6637, 6883, 7057, 7283, 7369, 7393, 7433, 7621, 7741, 7841, 7853, 7963

Offset: 1

Author

Juri-Stepan Gerasimov, Nov 13 2009

Keywords

• nonn
• less

Comments

Essentially the same as A137872. [From R. J. Mathar, Dec 06 2009]

Includes almost all primes.

Examples

			a(1)=2 (-8,-6,-4,-2,0,4,6,8,10,12 are nonprimes); a(2)=211 (201,203,205,207,209,213,215,217,219,221 are nonprimes).
		

Extensions

1831 was incorrect. 3967 appeared twice. 4703, 5209 and 5261 were missing. Added more terms Dmitry Kamenetsky, Nov 30 2009

Editing and comment by Charles R Greathouse IV, Mar 25 2010