989999

Properties

Appears in sequences

• Primes that contain digits 8 and 9 only.at n=9A020472
• Smallest prime number whose digits sum to n-th prime.at n=15A054750
• Primes at which sum of digits strictly increases.at n=32A061248
• Smallest prime with digit sum n, or 0 if no such prime exists.at n=52A067180
• The smallest prime with a possible given digit sum.at n=35A067523
• Smallest n-digit prime with maximum digit sum.at n=5A069661
• Largest n-digit prime with maximum digit sum.at n=5A069662
• Smallest prime (> n-th prime) with sum of digits = the n-th prime, or 0 if no such prime exists.at n=15A075360
• Duplicate of A054750.at n=15A082257
• a(n) = largest prime using least number of possible digits with a digit sum n, or 0 if no such number exists. E.g., if n > 9 and there are no two-digit primes with a given digit sum n then three-digit numbers are explored and so on.at n=52A088115
• Near-repdigit primes with 9 as repeated digit.at n=25A105975
• Primes with digit sum = 53.at n=0A106782
• The lesser of twin prime pairs with each prime in a different millennia.at n=26A158861
• Primes of the form n^3-n^2-1.at n=28A162291
• Primes with repdigit indices (in decimal).at n=42A258433
• Near-repdigit primes with only digits 9 and a single 8 in decimal expansion.at n=4A263431
• a(n) is the smallest prime number, with sum of digits equals n and a(n) is greater than previous nonzero terms, except if this is not possible in which case a(n)=0.at n=52A282342
• Least number k such that the determinant of the circulant matrix formed by its decimal digits is equal to n.at n=53A306593
• a(n) is the first member of A106843 with sum of digits n.at n=51A361831
• Prime numbersat n=77777