24137

Properties

Appears in sequences

• Numbers k such that 255*2^k-1 is prime.at n=40A050886
• Primes of the form a^4 + b^3 with b>0.at n=39A100271
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 1), (-1, 1, 0), (0, 1, -1), (1, 0, 0), (1, 1, 0)}.at n=8A150329
• Primes that are the average of the members of emirp pairs.at n=18A178581
• Nonpalindromic primes that are the average of the members of emirp pairs.at n=10A178585
• Primes with eight embedded primes.at n=25A179916
• Primes which are the sum of three distinct positive cubes in two or more distinct ways.at n=20A180088
• Prime numbers containing the digit string 137.at n=21A190307
• The Riemann primes of the psi type and index 1.at n=39A197185
• "Convex" primes: extremal primes in the sense of Tutaj.at n=26A246033
• Least prime of the form x^2+13*n^2.at n=42A248409
• Primes of the form 3^x + y^3 with x, y >0.at n=33A250716
• Numbers n such that n!!! - 3^10 is prime, where n!3 = n!!! is a triple factorial number (A007661).at n=32A265201
• Prime time primes (of the form HMMSS with primes H < 24 and MM, SS < 60) such that the corresponding number of seconds after midnight is also prime.at n=30A295000
• Primes whose index is divisible by the product of its digits.at n=31A306766
• Convex hull primes, that is, prime numbers corresponding to the convex hull of PrimePi, the prime counting function.at n=31A319126
• Smallest full reptend prime p such that there is a gap of exactly 2n between p and the next full reptend prime, or 0 if no such prime exists.at n=42A334287
• a(n) = Sum_{d|n} lcm(tau(d), pod(d)) where tau(k) is the number of divisors of k (A000005) and pod(k) is the product of divisors of k (A007955).at n=19A334793
• Primes p such that 14*p + 1 divides 2^p - 1.at n=20A350702
• Prime numbersat n=2688