999983

Properties

Appears in sequences

• Largest n-digit prime.at n=5A003618
• 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=46A088115
• Smallest and largest primes pairwise displayed with k digits from k=2,3,... with repeated decimal digits.at n=9A099630
• Smallest and largest of the n-digit primes.at n=11A101592
• Largest n-digit prime whose digit reversal is also prime.at n=5A114019
• Largest n-digit emirp (A006567) with nonincreasing digits.at n=4A127828
• Largest prime <= square root of 10^n.at n=11A132153
• Last prime subtrahend at 10^n in A146757.at n=5A146758
• Last prime subtrahend at 10^n in A146759.at n=5A146760
• a(n) = largest member of the n-th term in S(10) (defined in Comments).at n=5A158579
• Fourth root of largest n-digit number with exactly five divisors.at n=22A174394
• Larger of the greatest cousin prime pair with n digits.at n=5A240170
• Largest n-digit prime whose digit sum is also prime.at n=5A249448
• a(n) is the largest prime < 10^n that is the sum of at least two consecutive primes.at n=5A342443
• Prime numbersat n=78498