4084079

Properties

Appears in sequences

• Smaller of twin primes whose mean (average) is a multiple of A002110(6)=30030.at n=24A060232
• Smaller of twin primes {p, p+2} whose average p+1 = k*q is the least multiple of the n-th primorial number q such that k*q-1 and k*q+1 are twin primes.at n=6A060255
• Smaller of twin primes of the form P=j*P(i)#-1 and P=j*P(i)#+1 with 0 < j < P(i+1), where P(i) denotes i-th prime and P(i)# the i-th primorial number A002110(i).at n=20A087732
• a(n) = A126098(n) - 1.at n=37A117010
• Primes of the form k^5-k-1.at n=11A126425
• a(n) = n^5 - n - 1.at n=20A126426
• Safe primes that are also highly cototient numbers.at n=21A209193
• Numbers k where records occur for phi(k)/phi(k+1), where phi is the Euler totient function (A000010).at n=39A335070
• Prime numbersat n=288716