80429

Properties

Appears in sequences

• Numbers k such that phi(k) = sigma(k+1) - sigma(k-1).at n=22A066155
• Largest prime of which the square still does not exceed the product of first n primes, the n-th primorial.at n=8A067021
• Primes in A103377.at n=18A103387
• Primes in A103378.at n=18A103388
• Primes in A103379.at n=19A103389
• Primes of the form 25n^2-14n+2 for n >= 0.at n=14A154356
• Primes p such that the period of the continued fraction of (1-sqrt(p))/2 has length 3 and p is not of the form k^2+1.at n=29A188136
• Primes that are the sum of 151 consecutive primes.at n=2A215994
• Prime-indexed primes q such that prime(q)-q-1 is a prime indexed prime.at n=22A318751
• Prime numbersat n=7873