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A129673 Right truncatable primes in base 7 (written in decimal form). 0
2, 3, 5, 17, 19, 23, 37, 41, 137, 139, 163, 167, 263, 293, 977, 1171, 1847, 2053, 6841 (list; graph; refs; listen; history; text; internal format)
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: A321910 A045314 A129943 * A215372 A290043 A058501

Adjacent sequences:  A129670 A129671 A129672 * A129674 A129675 A129676

KEYWORD

nonn,fini,full,base

AUTHOR

Martin Renner, Jun 01 2007

STATUS

approved

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Last modified March 21 22:19 EDT 2019. Contains 321382 sequences. (Running on oeis4.)