4444444447

Appears in sequences

• Smallest n-digit prime containing only the digits 4 and 7, or 0 if no such prime exists.at n=9A036944
• Smallest prime containing exactly n 4's.at n=9A037061
• Smallest prime beginning with exactly n 4's.at n=9A065587
• Primes arising in A087605, or 0 if A087605(n) = 0.at n=8A087608
• Primes of the form identical digits followed by a 7.at n=25A090147
• Primes of the form 40*R_k + 7, where R_k is the repunit (A002275) of length k.at n=3A092480
• a(n) is the smallest prime greater than 4(10^n - 1)/9.at n=10A099658
• Near-repdigit primes with at least two 4's as the repeated digit.at n=8A105980
• Smallest prime beginning with exactly n identical digits.at n=8A131316
• Primes of form (4*10^n+23)/9.at n=4A173771
• a(n) = (4*10^n + 23)/9.at n=9A173772
• Largest n-digit prime with the most digits equal to 4.at n=9A178002