2282280

Appears in sequences

• Integers n for which the ratio phi(n)/pi(n) is smaller than for any subsequent n. Here phi(n) is Euler's totient function and pi(n) is the number of primes that are at most n.at n=37A080289
• Numbers that can be expressed as the difference of the squares of primes in exactly twenty-one distinct ways.at n=0A092017
• Least number that can be expressed as the difference of the squares of primes in exactly n distinct ways.at n=20A092204
• Dimensions of the irreducible representations of the simple Lie algebra of type E7 over the complex numbers, listed in increasing order.at n=29A121736
• Numbers with prime factorization pqrstuv^3.at n=1A190316
• a(n) = lcm(A000793(n),p1,p2,...,pk) for such a partition {p1+p2+...+pk} of n that maximizes this value among all partitions of n.at n=34A225627
• a(n) = lcm(A000793(n),p1,p2,...,pk) for such a partition {p1+p2+...+pk} of n that maximizes this value among all partitions of n.at n=35A225627
• Numbers n such that the multiplicative group modulo n is the direct product of 8 cyclic groups.at n=1A272598
• Positive integers where the number of triples of divisors (d1, d2, d3) such that d1 < d2 < d3 < 2*d1 and each pair of these divisors is pairwise coprime, sets a new record.at n=21A333966
• a(n) is the smallest number with exactly n divisors that are tetrahedral numbers.at n=18A358542
• The smallest number k for which exactly n of its divisors are digitally balanced numbers in base 3 (A049354).at n=22A372146
• a(n) is the smallest integer k such that A384237(k) = n.at n=26A385391