A327919 The 17 pure prime dates of each leap year of the form concatenate(month,day) with month and day also prime numbers.

23, 211, 223, 229, 37, 311, 313, 317, 331, 53, 523, 73, 719, 113, 1117, 1123, 1129

Offset: 1

Author

Wolfdieter Lang, Oct 08 2019

Keywords

• nonn
• easy
• fini
• full

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.

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).