8304757

Properties

Appears in sequences

• a(1) = 1; a(2n) is the smallest prime == 1 mod (a(2n-1)) and a(2n+1) is the smallest composite number == 1 (mod a(2n)).at n=29A075340
• a(1) = 1, a(2n) is the smallest composite number == 1 mod (a(2n-1)) and a(2n+1) is the smallest prime == 1 (mod a(2n)).at n=34A075341
• Prime(k), where k is such that (1 + Sum_{i=1..k} prime(i)^17) / k is an integer.at n=16A233557
• Prime numbersat n=558905