131707

Properties

Appears in sequences

• a(n) is the least k > 0 such that sigma(k!) >= n*k!.at n=21A061556
• Smallest number m such that m#/phi(m#) >= n, where m# indicates the primorial (A034386) of m and phi is Euler's totient function.at n=20A091440
• Let a(n) be the n-th term of the sequence. Let m = primorial(a(n)); m is the minimum positive integer such that m/phi(m) >= n.at n=20A167348
• Primes of the form 6n^3 - 5.at n=13A200845
• Primes p such that the 3 X 3 matrix with components (row by row) prime(k+m), 0 <= m <= 8 has zero determinant, where p = prime(k).at n=17A337160
• Prime numbersat n=12301