206179
domain: N
Properties
Primality
- Prime
- yes
Appears in sequences
- Primes from merging of 6 successive digits in decimal expansion of cos(1).at n=3A104962
- a(1) = 2; for n > 1 if n mod 3=0 a(n) = gpf(1 + Product_{m modulo 3=2,m<n} a(m)), if n modulo 3=1 a(n) = gpf(1 + Product_{m modulo 3=0,m<n} a(m)), if n modulo 3=2 a(n) = gpf(1 + Product_{m modulo 3=1,m<n} a(m)).at n=16A260724
- Prime numbersat n=18479