226799

Properties

Appears in sequences

• Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite GOO starting with a T1 atom.at n=7A019021
• Primes p such that tau(p-1)+tau(p+1) is larger than for any previous term. (Smallest prime sandwiched between more composite numbers.)at n=38A090481
• Successive record-setters for tau(n+1)*tau(n-1)/tau(n)^2, where tau(n) is the number of divisors of n.at n=29A094342
• Chen primes p such that p + 2 is triangular.at n=21A109504
• Chen primes p such that their p + 2 counterpart is a Sarrus number (pseudoprime to base 2).at n=13A109994
• Primes of the form 7n^2 - 1.at n=16A201793
• Primes p such that d(p^2-1) sets a record, where d(n) is the number of divisors of n.at n=31A335325
• Primes of the form T(p) - 2 where T(p) is the triangular number (A000217) with prime index p in A357218.at n=31A357219
• Prime numbersat n=20167