55555559

Properties

Appears in sequences

• Primes that contain digits 5 and 9 only.at n=22A020468
• Smallest n-digit prime containing only the digits 5 and 9, or 0 if no such prime exists.at n=7A036947
• Primes of the form identical digits followed by a 9.at n=13A090148
• Primes of the form 50*R_k + 9, where R_k is the repunit (A002275) of length k.at n=1A093403
• a(n) is the least prime following A002279(n) repdigits.at n=7A099659
• Near-repdigit primes with at least two 5's as the repeated digit.at n=4A105979
• Smallest prime of the form: all fives followed by prime(n). a(n) >prime(n). 0 if no such prime exists.at n=16A114787
• Largest n-digit prime with the most digits equal to 5.at n=7A178003
• Prime numbers consisting of only odd digits such that there is only one permutation of its digits that produces a prime number.at n=37A225421
• Single-digit odd primes and primes whose decimal expansion has the form iii...ij, where i and j are distinct odd digits.at n=40A321363
• Prime numbersat n=3313339