56009

Properties

Appears in sequences

• Primes p such that 8p +1 and (p-1)/8 are primes.at n=20A085958
• Positions of hexagonal pyramidal numbers in the EKG sequence.at n=43A144080
• Smaller of two consecutive prime numbers such that p1*p2*d - d = average of twin prime pairs, d (delta) = p2 - p1.at n=5A153378
• Primes of the form 7n^3+9.at n=2A201257
• Primes p such that p plus the cube of sum of digits of p is a perfect square.at n=19A259418
• Primes p such that Sum_{k=primes<p} (k mod p) and Sum_{k=primes<p} (p mod k) are both prime.at n=21A274025
• Primes equal to a centered heptagonal number plus 1.at n=21A285811
• Primes having only {0, 5, 6, 9} as digits.at n=23A386078
• Primes p such that the sum and difference of the fourth power of the sum of 4 consecutive primes starting with p and the product of those primes are both prime.at n=19A389333
• Prime numbersat n=5685