68897

Properties

Appears in sequences

• First term of weak prime sextet: p(m+1)-p(m) < p(m+2)-p(m+1) < p(m+3)-p(m+2) < p(m+4)-p(m+3) < p(m+5)-p(m+4).at n=23A054828
• First term of weak prime septet: p(m+1)-p(m) < p(m+2)-p(m+1) < p(m+3)-p(m+2) < p(m+4)-p(m+3) < p(m+5)-p(m+4) < p(m+6)-p(m+5).at n=3A054834
• Primes that do not divide any term of the Lucas 5-step sequence A074048.at n=19A106301
• Primes with digit sum = 38.at n=12A106772
• Least prime p of a quartet of 4 distinct primes {p, p+2, q, q+2} such that each digit of q is the same as the corresponding digit of p except that each 6 in p corresponds to a 9 in q and vice versa.at n=16A122712
• Primes p such that the polynomial x^2 + x + p generates only primes for x = 0, ..., 4.at n=32A187057
• Primes p such that the polynomial x^2 + x + p generates only primes for x = 1..5.at n=13A187058
• Initial primes of 5 consecutive primes with consecutive gaps 2, 4, 6, 8.at n=16A190814
• Initial primes of 6 consecutive primes with consecutive gaps 2,4,6,8,10.at n=4A190817
• Prime numbers p such that x^2 + x + p produces primes for x = 0..5 but not x = 6.at n=6A210364
• Primes p such that p - d and p + d are also primes, where d is the smallest nonzero digit of p.at n=3A245878
• Prime numbersat n=6846