239378649509
domain: N
Appears in sequences
- Smallest prime p such that p+1 is the product of exactly n distinct prime numbers.at n=10A098026
- a(n) is the first prime p for which the absolute value of the difference between the numbers of distinct prime factors of p+1 and p-1 is exactly n.at n=9A353123
- a(n) is the least k for which omega(k)*omega(k + 1) = n where omega = A001221.at n=11A391216
- a(n) is the least k for which omega(k)*omega(k + 1)*omega(k + 2) = n where omega = A001221, or -1 if no such k exists.at n=11A392184