99999989

Properties

Appears in sequences

• Largest n-digit prime.at n=7A003618
• Smaller of two consecutive primes which have no common digits.at n=32A068803
• Largest n-digit prime with maximum digit sum.at n=7A069662
• Largest n-digit member of A087593. Define dd(k) = the number formed by concatenating the absolute difference of successive digits of k. Sequence contains largest n-digit prime p such that dd(p) is also prime.at n=6A087596
• Smallest and largest primes pairwise displayed with k digits from k=2,3,... with repeated decimal digits.at n=13A099630
• Smallest and largest of the n-digit primes.at n=15A101592
• Largest n-digit zeroless prime with nonprime digits.at n=6A103545
• Primes of the form k^8-k-1.at n=2A126437
• Largest prime <= square root of 10^n.at n=15A132153
• Last prime subtrahend at 10^n in A146757.at n=7A146758
• Largest prime with 2^n digits.at n=3A157035
• Fourth root of largest n-digit number with exactly five divisors.at n=30A174394
• Largest n-digit prime with the most digits equal to 9.at n=7A178007
• Greatest n-digit prime having at least n-1 identical digits.at n=7A241206
• Largest n-digit prime whose digit sum is also prime.at n=7A249448
• Near-repdigit primes with only digits 9 and a single 8 in decimal expansion.at n=9A263431
• a(n) is the largest prime < 10^n that is the sum of at least two consecutive primes.at n=7A342443
• Prime numbersat n=5761455