43321

Properties

Appears in sequences

• Primes that remain prime through 3 iterations of function f(x) = 5x + 2.at n=35A023283
• Frobenius number of the numerical semigroup generated by three consecutive pentagonal numbers.at n=20A069757
• Class 7+ primes.at n=4A081635
• a(1)=433640083; a(n+1)= the largest prime factor of a(n)+b(n)+c(n), where a(n)<b(n)<c(n) and a(n),b(n) and c(n) are three consecutive primes.at n=14A117631
• Let N(p,i) denote the result of applying "nextprime" i times to p; a(n) = smallest prime p such that N(p,2) - p = 2*n, or -1 if no such prime exists.at n=34A144103
• a(n) = 30*n^2 + 1.at n=38A158558
• Primes p such that reversal(p) - 13 is a square.at n=33A176371
• a(n) = prime(n*prime(n)).at n=32A228529
• First prime p such that (p+n)^2+n is prime but (p+j)^2+j is not prime for all 0<j<n.at n=34A238673
• Intersection of A251964, A252280 and A252281.at n=44A252283
• In view of their definitions, let us refer to A251964 as sequence "5", A252280 as sequence "7", and similarly define sequence "prime(n)"; a(n) is the third term of the intersection of sequences "5", ..., "prime(n)".at n=6A252732
• Primes of form n^2 + 1296.at n=22A256834
• Prime numbers with monotonically decreasing digits, differing by at most 1.at n=19A378775
• Prime numbersat n=4521