892371479

Properties

Appears in sequences

• 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=8A060255
• 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=23A087732
• Primes of the form primorial P(k)*2^n-1 with minimal n, n>=0, k>=2.at n=7A103515
• a(n) = 8*(Product{i=1..n} p(i + 1)) - 1, where p(i) = i-th prime.at n=8A228698
• Primes of the form 8*Product{i=1..n} p(i) - 1, where p(i) = i-th odd prime.at n=6A228699
• a(n) is the smallest q such that the number of nonnegative k <= q, possessing the property that k + k*q - q is a square, is equal to 2^n.at n=10A332802
• Prime numbersat n=45639242