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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 single-digit primes {2,3,5,7} UNION A020449.
The repunit primes (A004022) and A116692 are subsequences.
LINKS
CROSSREFS
Sequence in context: A084837 A062352 A033938 * A049575 A070028 A084836
KEYWORD
nonn,base
AUTHOR
Amarnath Murthy, Mar 25 2002
EXTENSIONS
Edited by Rick L. Shepherd, Sep 04 2009
STATUS
approved

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Last modified June 20 11:12 EDT 2024. Contains 373527 sequences. (Running on oeis4.)