659400

Appears in sequences

• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 29.at n=27A031707
• a(n) = 841*n^2 + 2*n.at n=27A158403
• Numbers k for which phi(A267099(k)) is equal to phi(k), but the number of 4m+1 and 4m+3 primes in the prime factorization of k (when counted with multiplicity) is not equal. Here A267099 is fully multiplicative involution swapping the positions of 4m+1 and 4m+3 primes, and phi is Euler totient function.at n=39A354194