799999999

Properties

Appears in sequences

• Smallest prime containing exactly n 9's.at n=8A037071
• Smallest number whose digits sum to n-th prime.at n=21A046864
• Smallest prime number whose digits sum to n-th prime.at n=21A054750
• a(n) = n*10^n - 1.at n=7A064756
• Smallest prime ending in exactly n 9's.at n=7A065582
• Smaller of two consecutive primes which have no common digits.at n=35A068803
• Smallest prime (> n-th prime) with sum of digits = the n-th prime, or 0 if no such prime exists.at n=21A075360
• Primes of the form identical digits preceded by a 7.at n=10A090155
• Primes of the form 8*10^k - 1.at n=4A093947
• Smallest prime of the form 7 followed by j copies of the digit k, where j runs through those positive values for which such a prime exists.at n=6A112750
• Smallest number whose sum of digits is 3n+1.at n=26A133264
• Primes consisting of a digit and a nonempty string of 9's (i.e., primes of the form k*10^m - 1, where k is any digit).at n=24A141311
• a(n) = 8*10^n - 1.at n=8A198973
• Primes of the form k*10^k - 1.at n=2A216346
• Numbers n such that the digits of antisigma(n) end in sigma(n).at n=13A248819
• Smallest n-digit prime having at least n-1 digits equal to 9.at n=8A268707
• Prime numbersat n=41146179