89460294

Appears in sequences

• Numbers n such that sopf(n) divides sopf(n+1) and sopf(n+1) divides sopf(n+2).at n=10A173172
• Ruth-Aaron triples (1): sum of primes dividing n = sum of primes dividing (n+1) = sum of primes dividing (n+2).at n=0A227654