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A327919 The 17 pure prime dates of each leap year of the form concatenate(month,day) with month and day also prime numbers. 2
23, 211, 223, 229, 37, 311, 313, 317, 331, 53, 523, 73, 719, 113, 1117, 1123, 1129 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

For the non-leap case see A327918.

The months m = 2, 3, 5, 7, 11 contribute 4, 5, 2, 2, 4 days, respectively, adding to 17.

LINKS

Table of n, a(n) for n=1..17.

CROSSREFS

Cf. A165243 (first four terms), A165292 (first five terms), A165555 (first two terms), A167187 (first two terms), A327349 (m and d nonprime allowed), A327915 (with 0 before d = 1..9), A327918 (non-leap year case), A327920 (pure prime dates of d.m form).

Sequence in context: A084428 A322287 A327918 * A165243 A142374 A171342

Adjacent sequences:  A327916 A327917 A327918 * A327920 A327921 A327922

KEYWORD

nonn,easy,fini,full

AUTHOR

Wolfdieter Lang, Oct 08 2019

STATUS

approved

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Last modified June 20 03:33 EDT 2021. Contains 345157 sequences. (Running on oeis4.)