777777773

Properties

Appears in sequences

• Smallest prime beginning with exactly n 7's.at n=8A065590
• Largest n-digit prime with only prime digits.at n=8A071060
• a={1,3,7,9} a1={1,3,7,9,0} b[n]=Flatten[Table[10*Sum[10^m*a1[[1+Mod[n,5]]],{m,0,n}]+a,{n,0,digits}]]; a[m]=if b[n] is prime then b[n].at n=10A089690
• Primes of the form identical digits followed by a 3.at n=21A090146
• Primes of the form 70*R_k + 3, where R_k is the repunit (A002275) of length k.at n=4A093165
• a(n) is the largest prime before A002281(n); repdigits repeating 7.at n=8A099667
• a(n) = (7*10^n - 43)/9 for n > 0.at n=8A173807
• Primes whose digits are prime and in nonincreasing order.at n=32A364831
• Near-repdigit primes with at least two 7's as the repeated digit.at n=2A365597
• Prime numbersat n=40061056