444444443

Properties

Appears in sequences

• Smallest prime containing exactly n 4's.at n=8A037061
• Smallest prime beginning with exactly n 4's.at n=8A065587
• a(1) = 1, a(n) = the largest prime divisor of concatenation of sequence (n,n-1,..,2,1,2,..,n-1,n) A007942.at n=8A074836
• Primes of the form identical digits followed by a 3.at n=20A090146
• Primes of the form 40*R_k + 3, where R_k is the repunit (A002275) of length k.at n=4A093163
• Primes of form repdigit - 1. Primes whose sum of divisors is a decimal repdigit.at n=11A096843
• a(n) is the largest prime before A002278(n).at n=8A099664
• Near-repdigit primes with at least two 4's as the repeated digit.at n=7A105980
• Primes such that the outer 2 digits are n and n-1 and all inner digits are 4, where 0 < n < 9.at n=7A108831
• a(n) = (4*10^n - 13)/9.at n=8A173770
• Largest n-digit prime with the most digits equal to 4.at n=8A178002
• k-digit primes with the same even digit repeated k-1 times and a single odd digit.at n=37A320256
• Prime numbersat n=23574105