79939

Properties

Appears in sequences

• Primes base 10 that remain primes in six bases b, 2<=b<=10, expansions interpreted as decimal numbers.at n=15A052028
• Numbers k such that 7*2^k - 3 is prime.at n=44A058593
• a(n) is the numerator of Sum_{i=1..n} i!/(i^2).at n=8A121565
• Self-convolution of sequence A001402.at n=26A160647
• Numbers n such that 30n-13, 30n-11, 30n-1, 30n+1, 30n+11, 30n+13 are all prime.at n=26A175683
• Primes expressible as x^3 + 2*y^3 (x, y > 0) in two ways.at n=4A219722
• Integers expressible as x^3 + 2*y^3 (x, y > 0) in two ways.at n=20A219725
• Pell numbers (A000129) minus Lucas numbers beginning at 2 (A000032).at n=14A228748
• Lesser of cousin happy primes.at n=28A387896
• Prime numbersat n=7830