58999

Appears in sequences

• Smallest composite number with digit sum n.at n=39A067524
• a(n) is the smallest composite number with the sum of digits = the n-th composite number.at n=26A073866
• Greatest number m such that the fractional part of (1024/1000)^A153680(n) >= 1-(1/m).at n=11A153684
• a(1)=0, a(n+1) is the smallest nonprime with sum of digits > sum of digits of a(n).at n=36A156673
• The smallest composite number larger than the n-th composite number, which has a sum of digits equal to the n-th composite number.at n=26A161551
• Least semiprime whose digital sum is n, or 0 if no such integer exists.at n=40A213653
• Numbers that set a new integer record for the ratio between the product and the sum of their digits.at n=41A240520
• The semiprimes which set new records for the sum of their decimal digits.at n=28A257652
• a(0) = 1; thereafter a(n) = 2*a(n-1) + 1, with digits rearranged into nondecreasing order.at n=22A346296
• Square spiral on a 2D square lattice, one term per cell, starting at the origin with 0; the digits of the four integers forming any 2 X 2 square add up to a square and those sums themselves form another infinite 2D square lattice with the same property.at n=46A354375