9888889

Properties

Appears in sequences

• Primes that contain digits 8 and 9 only.at n=17A020472
• Palindromic primes whose digits contain circles.at n=3A052090
• Palindromic primes using only two distinct digits and only the exterior digit is different.at n=31A056728
• Primes which are a sandwich of numbers made of only one decimal digit between two 9's.at n=3A068689
• Smallest palindromic prime containing exactly n 8's.at n=4A083979
• Palindromic primes in which all internal digits are 8.at n=4A108847
• Minimal set of palindrome prime-strings in base 10 in the sense of A071062.at n=13A114835
• Palindromic primes with only composite digits (i.e.,4,6,8,9).at n=7A128376
• Largest n-digit prime with the most digits equal to 8.at n=6A178006
• a(1)=10; a(n) = a(n-1)*10 - 1.at n=6A179555
• Primes of the form XYYYYYX, where Y is a single digit.at n=7A214291
• Palindromic primes with strictly increasing sum of digits.at n=27A230045
• Prime numbersat n=657752