68999
domain: N
Appears in sequences
- Expansion of 1/((1-3x)(1-5x)(1-6x)(1-11x)).at n=4A028057
- Harmonic mean of digits is 8.at n=8A062185
- Smallest composite number with digit sum n.at n=40A067524
- a(n) is the smallest composite number with the sum of digits = the n-th prime number.at n=12A073868
- a(n) = smallest multiple of 7 with a digit sum = n.at n=39A077493
- a(1)=0, a(n+1) is the smallest nonprime with sum of digits > sum of digits of a(n).at n=37A156673
- Least semiprime whose digital sum is n, or 0 if no such integer exists.at n=41A213653
- The semiprimes which set new records for the sum of their decimal digits.at n=29A257652
- The sum of the prime digits of m and the sum of the nonprime digits of m differ by n.at n=40A341161