42017

Properties

Appears in sequences

• Record-setting differences between adjacent elements of the Mian-Chowla sequence variant A051788.at n=38A080223
• Depression-type primes with five digits; from left to right digits decrease to and increase from the central digit.at n=26A157083
• Prime intersections in a square spiral with positive integers: primes p such that there are four primes among eight nearest neighbors of p.at n=11A215470
• Primes p with p + 2, p + 6 and prime(p) + 6 all prime.at n=34A236509
• Initial members of prime quadruples (n, n+2, n+54, n+56).at n=32A248661
• Primes of form n^2 + 28561.at n=17A256841
• Primes p such that 2*prime(p) + 1 = prime(q) for some prime q.at n=40A261361
• Primes p such that p+2, (p+1)||p and (p+1)||(p+2) are primes (where || denotes concatenation in base 10).at n=37A309934
• Integers in Ulam's spiral for which the numbers around them form a square whose four corners are all prime numbers.at n=21A383596
• Prime numbersat n=4394