207367

Properties

Appears in sequences

• Primes of the form 8*k + 7 generated recursively. Initial prime is 7. General term is a(n) = Min_{p is prime; p divides 8*Q^2 - 1; p == 7 (mod 8)}, where Q is the product of the previous terms.at n=2A124985
• Primes p such that 54*p-1, 54*p+1 and 60*p-1, 60*p+1 are twin primes.at n=17A138698
• Least prime greater than n-th compositorial.at n=6A277005
• Primes p such that 2*p^2 - 7, 2*p^2 - 1, and 2*p^2 + 3 are prime.at n=27A356510
• Sum of the legs of the unique primitive Pythagorean triple (a,b,c) such that (a-b+c)/2 = A000032(n) and its long leg and hypotenuse are consecutive natural numbers.at n=12A383039
• First differences of cubefree taxi-cab numbers.at n=28A387253
• Prime numbersat n=18578