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A158750
Primes that are the concatenation of the first k triangular numbers for some k.
4
13, 136101521
OFFSET
1,1
COMMENTS
Next term, if it exists, would be very large, as there are no other primes of this form up to at least index 1600.
LINKS
Eric Weisstein's World of Mathematics, Consecutive Number Sequences
CROSSREFS
Cf. A078795.
Sequence in context: A324270 A351238 A177027 * A145744 A174309 A081509
KEYWORD
nonn,more,bref,base
AUTHOR
Eric W. Weisstein, Mar 25 2009
EXTENSIONS
Name clarified by Jon E. Schoenfield, Jul 13 2021
STATUS
approved