202129
domain: N
Properties
Primality
- Prime
- yes
Appears in sequences
- prime(k) for those k where floor((2*(prime(k+1)-prime(k))*PrimePi(k) mod (8*k))/k) = m with m = 12.at n=19A109566
- Concatenation of primitive Pythagorean triangles, sorted.at n=8A138043
- Primes formed from the concatenation of primitive Pythagorean triples.at n=1A138044
- Primes p such that q-p = 54, where q is the next prime after p.at n=18A204666
- Number of ordered triples (w,x,y) with all terms in {-n,...-1,1,...,n} and w+5x+5y>0.at n=37A211627
- Prime numbersat n=18161