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A110720
Beginning with 5, concatenation of n successive numbers such that every partial concatenation is a prime.
1
5, 23, 353637, 18192021, 7576777879, 67891011, 71727374757677, 12121213121412151216121712181219, 5678910111213, 1194119511961197119811991200120112021203
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OFFSET
1,1
LINKS
Table of n, a(n) for n=1..10.
EXAMPLE
5,523,523353637,... are all prime.
CROSSREFS
Cf.
A110714
,
A110715
,
A110716
,
A110717
,
A110718
,
A110719
,
A110721
.
Sequence in context:
A345713
A174106
A120660
*
A200822
A112613
A305057
Adjacent sequences:
A110717
A110718
A110719
*
A110721
A110722
A110723
KEYWORD
base
,
hard
,
nonn
AUTHOR
Amarnath Murthy
, Aug 05 2005
EXTENSIONS
More terms from
Jon E. Schoenfield
, Jul 11 2010
STATUS
approved
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Last modified September 9 05:53 EDT 2024. Contains 375759 sequences. (Running on oeis4.)