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

1,1

Comments

There are exactly 19 right truncatable primes in base 7.

Links

Table of n, a(n) for n=1..19.

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

Example

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

Crossrefs

Cf. A024767, A076586.

Sequence in context: A045314 A129943 A341786 * A215372 A290043 A058501

Adjacent sequences: A129670 A129671 A129672 * A129674 A129675 A129676

Keyword

nonn,fini,full,base

Author

Martin Renner, Jun 01 2007

Status

approved