61643

Properties

Appears in sequences

• Primes that do not divide any term of the Lucas 5-step sequence A074048.at n=18A106301
• Least prime P1 of 8 different primes: 4 consecutive primes P1 P2 P3 P4 and 4 primes Q1 Q2 Q3 Q4 such that Q1 with same digits than P1 if not 6 or 9, if 6 then replace with 9 and if 9 then replace with 6, same for Q2 from P2 Q3 from P3 and Q4 from P4.at n=6A122713
• Numerator of Sum_{k=1..n}(-1)^k/phi(k), where phi = A000010.at n=33A211177
• Primes that are sums of three, five and seven consecutive primes.at n=1A213814
• Primes p with f(p), f(f(p)) and f(f(f(p))) all prime, where f(n) = prime(n) - n + 1.at n=29A235934
• Primes p such that p+8, p+86, p+864 are prime.at n=30A236302
• Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 441", based on the 5-celled von Neumann neighborhood.at n=30A288330
• Primes p such that for all initial conditions (x(0),x(1),x(2),x(3),x(4)) in [0..p-1]^5 except [0,0,0,0,0], the 5-step recurrence x(k) = x(k-1) + x(k-2) + x(k-3) + x(k-4) + x(k-5) (mod p) has the same period, but x^5 - x^4 - x^3 - x^2 - x - 1 is reducible (mod p).at n=1A371569
• Prime numbersat n=6202