388961

Properties

Appears in sequences

• Let (p1,p2), (p3,p4) be pairs of twin primes with p1*p2=p3+p4-1; sequence gives values of p3.at n=6A047978
• Smaller member of a twin prime pair with a square sum.at n=21A069496
• Primes equal to a product of twin primes minus 1 divided by 2.at n=12A086870
• 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=32A094342
• (Product of twin primes - 1)/2.at n=34A120876
• Primes p such that p+2, p*(p+2)+18 and p*(p+2)+20 are also prime.at n=28A130737
• Numbers k such that 17 is the largest prime factor of k^2 - 1.at n=45A181452
• Primes of the form 2*n^4-1.at n=8A182784
• Numbers m>=2, such that, if a prime p divides m^2-1, then every prime q<p divides m^2-1 as well.at n=26A194099
• Largest prime p such that the greatest prime factor of p^2-1 is prime(n).at n=6A214093
• Interpolation polynomial through n+1 points (0,1), (1,1), ..., (n-1,1) and (n,n) evaluated at 2n.at n=9A237664
• Smaller member of a twin prime pair with a perfect power sum.at n=24A270231
• Numbers m such that each of the four consecutive integers m, m+1, m+2, m+3 has squarefree rank 1.at n=10A290340
• Primes p such that min(d(p-1), d(p+1)) is larger than the corresponding values of all previous primes, where d(n) is the number of divisors of n (A000005).at n=18A319823
• Primes p such that d(p^2-1) sets a record, where d(n) is the number of divisors of n.at n=34A335325
• Numbers k such that A155085(k) is in A037074.at n=26A352616
• Prime numbersat n=32981