1123456789

Appears in sequences

• Smallest k such that k*n is a number that is a permutation of the digits of first n numbers. a(n) = A083429(n)/n.at n=9A083430
• The largest n-digit primeval number A072857.at n=9A134596
• Minimal n-primeval numbers: a(n) = smallest number M such that all primes with <= n digits are embedded in a permuted subsequence of M's digits.at n=1A134649
• a(n) is the smallest n-digit integer whose digit permutations make the maximum possible number of n-digit primes.at n=9A373179
• a(1)=1, and for n>1, a(n) = a(n-1) concatenated with the length of the decimal representation of a(n-1).at n=9A383429