86171

Properties

Appears in sequences

• Largest prime factor of 2^n + 1.at n=35A002587
• Largest primitive factor of 2^(2n+1) + 1.at n=17A002589
• Multiplicity of highest weight (or singular) vectors associated with character chi_173 of Monster module.at n=41A034561
• A006530(x)=2 is a local minimum if x=2^n. Running upward with argument x, the largest prime divisor should increase. The value of first peak is a(n).at n=34A102643
• Expansion of 1/((1-4*x*c(x))(1-x^2*c(x))), c(x) the g.f. of A000108.at n=7A117381
• List of primitive prime divisors of the Jacobsthal numbers A001045 in their order of occurrence.at n=38A129738
• Irregular triangle in which row n has all primes q such that prime(n)*q is a base-2 Fermat pseudoprime.at n=27A180471
• Greatest prime factor of n^7+1.at n=31A240550
• Largest prime factor of the n-th Jacobsthal number, A001045(n).at n=32A271314
• Primes formed by concatenating n and 2n-1.at n=30A309851
• Prime numbersat n=8377