3294173

Properties

Appears in sequences

• phi(n) is equal to the product of the dual prime-power components of n-1 (i.e., A008477(n-1)).at n=10A039783
• Smallest prime of the form k*n^n + 1.at n=6A070855
• Primes of the form 2^r*7^s + 1.at n=18A077498
• a(n) is the smallest prime p such that 7^n divides p^6 - 1.at n=6A125611
• Smallest odd prime base q such that p^7 divides q^(p-1) - 1, where p = Prime[n].at n=3A125648
• a(n) = 4*7^n+1.at n=7A199419
• Primes of the form x^x * y^y + 1.at n=6A228238
• Primes q such that Sum_(q-1; i=1..m) e(i)/p(i) is an integer k, where the prime factorization of n is Product_(n; i=1..m) p(i)^e(i).at n=10A267143
• Primes of form 4*k^k + 1.at n=3A301641
• Prime numbersat n=236526