40387

Properties

Appears in sequences

• Lonely (or isolated) primes: least prime of distance n from nearest prime (n = 1 or even).at n=13A023188
• Primes that remain prime through 4 iterations of function f(x) = 2x + 5.at n=22A023304
• Primes that remain prime through 5 iterations of function f(x) = 2x + 5.at n=6A023332
• prime(k) for those k where floor((2*(prime(k+1)-prime(k))*PrimePi(k) mod (8*k))/k) = m with m = 9.at n=30A109563
• Numbers appearing in A122072 at least four times.at n=34A122390
• Primes p such that q-p = 36, where q is the next prime after p.at n=13A134117
• Row sums of triangle A134349.at n=9A134350
• a(n) = Sum_{i=2^(n-1)..2^n-1} sigma_0(i), sigma_0(i) number of divisors of n, n positive integer.at n=12A153876
• Primes p such that both p^5 - 6 and p^5 + 6 are prime.at n=17A157256
• Least prime of three consecutive primes (p1,p2,p3) such that p2-p1 and p3-p2 are both perfect squares.at n=7A161002
• Prime numbers with gaps larger than 18 towards both neighboring primes.at n=27A163111
• Prime numbers with gaps larger than 20 towards both neighboring primes.at n=13A163112
• Primes P where the distance to the nearest prime is greater than 2*log(P).at n=28A330426
• Prime numbersat n=4236