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A083428 Smallest prime that can be formed using the digits of first 3n+1 numbers, or 0 if no such number exists. 0
1423, 1234657, 10123457689, 10111112233469857, 10111111112233445569867, 10111111111112233445566799887, 10011111111111122222233445567689987, 10011111111111122222222233344455566879789, 10011111111111122222222222233344455566677897889 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
The digits of first 3n and first 3n-1 numbers yield a composite number which is a multiple of 3. Conjecture: No entry is zero. Subsidiary sequence: the number of distinct primes that can be formed using the digits of first 3n + 1 numbers.
LINKS
CROSSREFS
Sequence in context: A023937 A225567 A216444 * A183780 A068572 A236897
KEYWORD
base,nonn
AUTHOR
Amarnath Murthy and Meenakshi Srikanth (menakan_s(AT)yahoo.com), Apr 29 2003
EXTENSIONS
a(4)-a(9) from Donovan Johnson, Apr 03 2008
STATUS
approved

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Last modified May 21 02:29 EDT 2024. Contains 372720 sequences. (Running on oeis4.)