839809

Properties

Appears in sequences

• Class 1- (or Pierpont) primes: primes of the form 2^t*3^u + 1.at n=40A005109
• Primes of form 1+(2^a)*(3^b), a>0, b>0.at n=34A058383
• Primes obtained as the product of successive terms of A084039 + 1, i.e., a(n) = A084039(n)*A084039(n+1) + 1.at n=18A084040
• Numbers n such that sigma(n) = 2n - 3*phi(phi(n)).at n=35A110074
• Primes of the form k*6^m +1 where k is a Mersenne prime (A000668) and m is an integer.at n=8A185167
• Primes of the form 3*6^k+1.at n=4A186105
• a(n) = 3*6^n+1.at n=7A199318
• Generalized cuban primes (A007645) which are also Class 1- (or Pierpont) primes (A005109).at n=35A217035
• Number of partitions of n^4 into at most two parts.at n=36A274323
• a(n) is the least prime of the form 2^j*3^k + 1, j > 0, k > 0, j + k = n. a(n) = 0 if no such prime exists.at n=13A336773
• Prime numbersat n=66875