A113017 Primes that become composites when their decimal representation is interpreted duodecimally.

13, 19, 23, 29, 41, 43, 47, 53, 59, 71, 73, 79, 83, 89, 97, 101, 103, 109, 113, 127, 137, 139, 149, 151, 163, 173, 179, 191, 193, 197, 199, 211, 223, 227, 229, 233, 239, 257, 263, 269, 281, 283, 293, 311, 313, 317, 331, 337, 349, 353, 359, 367, 373, 379, 383

Offset: 1

Author

Reinhard Zumkeller, Oct 11 2005

Keywords

• nonn
• base

Examples

			A000040(25)=97 -> 9*12^1+7*12^0=108+7=115=5*23.
		

Links

• Robert Price, Table of n, a(n) for n = 1..26358
• Eric Weisstein's World of Mathematics, Duodecimal

Crossrefs

Cf. A000040, A002808, A113016, A102487.