

A069598


Primes using only one nonzero digit (with zero digits allowed).


2



2, 3, 5, 7, 11, 101, 10111, 101111, 1011001, 1100101, 10010101, 10011101, 10100011, 10101101, 10110011, 10111001, 11000111, 11100101, 11110111, 11111101, 100100111, 100111001, 101001001, 101001011, 101100011, 101101111
(list;
graph;
refs;
listen;
history;
text;
internal format)



OFFSET

1,1


COMMENTS

From the fifth term onwards only zeros and ones are used.
Any number composed only of a string of zeros and d's where d is a digit > 1 is divisible by d and not prime, so this sequence is the singledigit primes {2,3,5,7} UNION A020449.
The repunit primes (A004022) and A116692 are subsequences.


LINKS

Table of n, a(n) for n=1..26.


CROSSREFS

Cf. A020449, A004022, A116692.
Sequence in context: A084837 A062352 A033938 * A049575 A070028 A084836
Adjacent sequences: A069595 A069596 A069597 * A069599 A069600 A069601


KEYWORD

nonn,base


AUTHOR

Amarnath Murthy, Mar 25 2002


EXTENSIONS

Edited by Rick L. Shepherd, Sep 04 2009


STATUS

approved



