یکیتکری

Key facts

Integer sequence.name

Repunit prime

Integer sequence.terms_number

11

Integer sequence.con_number

Infinite

Integer sequence.first_terms

11, 1111111111111111111, 11111111111111111111111

Integer sequence.largest_known_term

(108177207−1)/9

Integer sequence.OEIS

A004022

Integer sequence.OEIS_name

Primes of the form (10^n − 1)/9

via Wikipedia infobox