20627
domain: N
Properties
Primality
- Prime
- yes
Appears in sequences
- Discriminants of totally complex sextic fields (negated).at n=12A023687
- Primes p such that the polynomial x^5-x^4-x^3-x^2-x-1 mod p has 5 distinct zeros.at n=14A106281
- Prime numbers p for which quintonacci quintic polynomial x^5-x^4-x^3-x^2-x-1 modulus p is completely factorizable.at n=15A135846
- Prime numbers p not of the form 10k+1 for which the quintonacci quintic polynomial x^5 - x^4 - x^3 - x^2 - x - 1 modulus p is factorizable into five binomials.at n=11A135847
- Primes congruent to 36 mod 59.at n=38A142763
- Primes congruent to 9 mod 61.at n=39A142807
- Primes p such that both p^5 - 6 and p^5 + 6 are prime.at n=8A157256
- a(0) = 2; for n>0, a(n) = smallest prime p such that p > a(n-1) and p is congruent to n modulo prime(n).at n=40A261192
- Numerators of upper primes-only best approximates (POBAs) to sqrt(3); see Comments.at n=16A265780
- Primes prime(k) such that (prime(k)*prime(k+1)+1)/2 is prime.at n=33A266163
- Expansion of (1/(1 - x)) * Product_{k>=1} (1 + k*x^k/(1 - x)^k).at n=10A307259
- Primes p such that if q is the next prime, p+A004086(q) and q+A004086(p) are prime.at n=17A351728
- Primes having only {0, 2, 6, 7} as digits.at n=23A386051
- Prime numbersat n=2325