44444444441
domain: N
Appears in sequences
- Smallest prime containing exactly n 4's.at n=10A037061
- Smallest prime beginning with exactly n 4's.at n=10A065587
- Smallest prime == 1 (mod n-th unary number U(n) = (10^n-1)/9).at n=9A083808
- Primes arising in A086920, or 0 if A086920(n) = 0.at n=9A086923
- Primes of the form identical even digits followed by a 1.at n=8A089345
- Primes of the form identical digits followed by a 1.at n=20A089347
- Primes of the form 40*R_k + 1, where R_k is the repunit (A002275) of length k.at n=2A093174
- a(n) is the largest prime before A002278(n).at n=10A099664
- Near-repdigit primes with at least two 4's as the repeated digit.at n=9A105980
- Primes of the form aaaa...aa1 where a is 1, 2, 3, 4 or 5.at n=11A109548
- Primes of the form aaaa...aa1 where a is 3, 4, 5, 6 or 7.at n=14A109550
- a(n) = (4*10^n - 31)/9.at n=10A173768
- Largest n-digit prime with the most digits equal to 4.at n=10A178002