22222222223
domain: N
Appears in sequences
- Smallest n-digit prime containing only digits 2 and 3.at n=10A036937
- Smallest prime containing exactly n 2's.at n=10A037057
- Smallest prime beginning with exactly n 2's.at n=10A065585
- Smallest prime starting with at least n 2s.at n=9A068103
- Smallest prime starting with at least n 2s.at n=10A068103
- Smallest prime which is a concatenation of n primes.at n=10A069837
- Jacobsthal sequence (A001045) as represented in base 4.at n=23A081857
- Smallest prime == 1 (mod n-th unary number U(n) = (10^n-1)/9).at n=10A083808
- Primes of the form identical digits followed by a 3.at n=24A090146
- Concatenation of n 2's followed by 3.at n=9A091628
- Expansion of g.f. (1-8*x)/((1-x)*(1-10*x)).at n=11A093135
- Primes of the form 20*R_k + 3, where R_k is the repunit (A002275) of length k.at n=4A093162
- Primes of the form 1 + repdigit. Primes whose totient is a repdigit.at n=11A096505
- a(n) is the least prime following A002276(n) repdigits.at n=11A099656
- Near-repdigit primes with at least two 2's as the repeated digit.at n=7A105982
- Primes such that the outer 2 digits are n and n+1 and all inner digits are 2, where 0 < n < 9.at n=5A108819
- Primes whose decimal expansion consists of a string of 2's followed by a string of 3's.at n=10A139067
- Largest n-digit prime with the maximum number of digits equal to 2.at n=10A178000
- Smallest prime number with prime(n) prime digits.at n=4A272796