Tolong jelaskan mengenai Smarandache–Wellin primes dari Daftar bilangan prima

Primes that are the concatenation of the first n primes written in decimal.

The fourth Smarandache-Wellin prime is the 355-digit concatenation of the first 128 primes that end with 719.

Of the form 2 ± 2 ± 1, where 0 < b < a.

3, 5, 7, 11, 13 ()

Where p and 2p + 1 are both prime.

2, 3, 5, 11, 23, 29, 41, 53, 83, 89, 113, 131, 173, 179, 191, 233, 239, 251, 281, 293, 359, 419, 431, 443, 491, 509, 593, 641, 653, 659, 683, 719, 743, 761, 809, 911, 953 ()