86507

Appears in sequences

• Numbers with three distinct prime factors which when concatenated in any order form prime numbers.at n=5A180679
• Numbers with three distinct prime factors (each of which may or may not be repeated) which when concatenated in any order form a prime number.at n=7A181559
• a(n) = a(n-1) + 3*a(n-2) -2*a(n-3) - 2*a(n-4), where a(0) = -1, a(1) = 2, a(2) = 3, a(3) = 4.at n=22A295721