389999999
domain: N
Properties
Primality
- Prime
- yes
Appears in sequences
- Smallest number that takes n steps to reach 0 under "k->min product of 2 numbers whose concatenation is k".at n=20A035933
- Smallest prime whose digital sum is equal to the n-th composite number not congruent to 0 (modulo 3).at n=28A111380
- Least prime p with digit sum A047235(n).at n=24A152652
- a(n) is the smallest number k such that digsum(k)/tau(k) = prime(n) where tau(k) is the number of divisors of k and digsum(k) is the sum of the digits of k.at n=11A240915
- Prime numbersat n=20831210