80831

Properties

Appears in sequences

• Lower twin primes with lower twin prime index.at n=35A088460
• 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=15A215470
• a(n) = gpf(1 + Product_{k=0..4} prime(n+k)), where gpf is greatest prime factor and prime(i) is the i-th prime.at n=3A261210
• Numbers k such that 5^k - 22 is prime.at n=12A378868
• Integers in Ulam's spiral for which the numbers around them form a square whose four corners are all prime numbers.at n=31A383596
• Prime numbersat n=7912