OFFSET
1,1
COMMENTS
Next term is 40 followed by 483 3's and is too large to display here (see the b-file).
LINKS
Toshitaka Suzuki, Table of n, a(n) for n = 1..409
EXAMPLE
For n = 13, a(13) = 1333333333333333 is a prime (but 133,1333,13333 etc. are not primes).
CROSSREFS
KEYWORD
base,sign
AUTHOR
Toshitaka Suzuki, Mar 30 2024
EXTENSIONS
Edited by N. J. A. Sloane, Apr 24 2024
STATUS
approved