A080168 Primes beginning and ending with '11' in binary representation.

3, 7, 31, 59, 103, 107, 127, 199, 211, 223, 227, 239, 251, 419, 431, 439, 443, 463, 467, 479, 487, 491, 499, 503, 787, 811, 823, 827, 839, 859, 863, 883, 887, 907, 911, 919, 947, 967, 971, 983, 991, 1019, 1543, 1559, 1567, 1571, 1579, 1583, 1607, 1619, 1627

Offset: 1

Author

Reinhard Zumkeller, Feb 04 2003

Keywords

• nonn
• base

Comments

Intersection of A002145 and A080166.

Examples

			A000040(17)=59 -> '111011' therefore 59 is a term.
		

Links

• Harvey P. Dale, Table of n, a(n) for n = 1..1000

Crossrefs

Cf. A004676, A074832, A030101.

Programs

Mathematica

Select[Prime[Range[300]],Take[IntegerDigits[#,2],2]==Take[ IntegerDigits[ #,2],-2]=={1,1}&] (* Harvey P. Dale, Jul 28 2021 *)