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A100893 a(n) = smallest n-digit prime formed by appending a digit to a(n-1); a(1) = 2. +0
2
2, 23, 233, 2333, 23333 (list; graph; listen)
OFFSET

1,1

COMMENT

This sequence is finite because there is no prime a(6) since 233331,233333,233337,233339 are not prime.

This is an initial subsequence of A048549, A065122, A088603, and A127889; and for any b, the base b analog of this sequence is an initial subsequence of the base b analog of each of these three sequences. [From Franklin T. Adams-Watters (FrankTAW(AT)Netscape.net), Jun 27 2009]

EXAMPLE

a(1)=2

a(2)=23

a(3)=233

a(4)=2333

a(5)=23333

CROSSREFS

Sequence in context: A026075 A037757 A037645 this_sequence A065122 A127889 A088603

Adjacent sequences: A100890 A100891 A100892 this_sequence A100894 A100895 A100896

KEYWORD

fini,nonn,base,full

AUTHOR

Jorge Coveiro (jorgecoveiro(AT)yahoo.com), Jan 10 2005

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Last modified November 24 23:16 EST 2009. Contains 167481 sequences.


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