A129673 Right truncatable primes in base 7 (written in decimal form).

2, 3, 5, 17, 19, 23, 37, 41, 137, 139, 163, 167, 263, 293, 977, 1171, 1847, 2053, 6841

Offset: 1

Author

Martin Renner, Jun 01 2007

Keywords

• nonn
• fini
• full
• base

Comments

There are exactly 19 right truncatable primes in base 7.

Examples

			263 is a term because 524_7 = 263_10, 52_7 = 37_10, and 5_7 = 5_10 and 263, 37 and 5 are all prime numbers. - _Bernard Schott_, Jan 25 2019
		

Links

• I. O. Angell and H. J. Godwin, On Truncatable Primes, Math. Comput. 31, 265-267, 1977.
• Eric Weisstein's World of Mathematics, Truncatable Prime.
• Index entries for sequences related to truncatable primes

Crossrefs

Cf. A024767, A076586.