404040401

Properties

Appears in sequences

• Primes formed by concatenating n, n, n, n, and 1 for n = 1, 2, 3,....at n=3A210720
• a(n) = n-th prime of the form (k concatenated with k concatenated...) n times concatenated with 1.at n=3A211401
• Prime numbersat n=21540205