68207

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=21A054828
• 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=2A054834
• Sequence of primes p(n) such that 2*p(n)+3, 2*p(n+1)+3, 2*p(n+2)+3 are consecutive primes, where p(i) denotes the i-th prime.at n=7A088119
• Lesser of Twin prime numbers of the form : i^2+j^3, as sum of square and cube, if Greater Twin prime number also of the form : i^2+j^3, as sum of square and cube.at n=13A143799
• Primes p such that the polynomial x^2 + x + p generates only primes for x = 0, ..., 4.at n=31A187057
• Initial primes of 5 consecutive primes with consecutive gaps 2, 4, 6, 8.at n=15A190814
• Prime numbers p such that x^2 + x + p produces primes for x = 0..4 but not x = 5.at n=18A210363
• Number of 8-element subsets of [n] having a prime element sum.at n=14A320683
• Primes p such that the 10's complement A089186(p) and the concatenations of p and A089186(p) and of A089186(p) and p are all prime.at n=42A372082
• Prime numbersat n=6788