555555555551
domain: N
Appears in sequences
- Smallest prime containing exactly n 5's.at n=11A037063
- Smallest prime beginning with exactly n 5's.at n=11A065588
- Smallest prime starting with n 5s.at n=10A068105
- Smallest prime starting with n 5s.at n=11A068105
- Primes arising in A086920, or 0 if A086920(n) = 0.at n=10A086923
- a(n) = smallest prime of the form 10*K(n) + 1, where K is a number obtained by concatenation of n with itself, or 0 if no such prime exists.at n=4A087403
- Primes of the form identical odd digits followed by a 1.at n=12A089346
- Primes of the form identical digits followed by a 1.at n=21A089347
- Smallest prime whose product of digits is 5^n.at n=11A090840
- Smallest prime of the form concatenation of prime(n) with itself followed by a 1.at n=2A092992
- a(n) is the largest prime before A002279(n).at n=11A099665
- Lesser of two successive primes the average of which is a repdigit.at n=7A104388
- Near-repdigit primes with at least two 5's as the repeated digit.at n=6A105979
- Primes of the form aaaa...aa1 where a is 1, 2, 3, 4 or 5.at n=12A109548
- Primes of the form aaaa...aa1 where a is 3, 4, 5, 6 or 7.at n=15A109550
- a(n) = (5*10^n - 41)/9 for n > 0.at n=11A173804
- Expansion of x*(1 + 5*x + 40*x^2)/((1 - x^2)*(1 - 10*x^2)).at n=23A322927