71647

Properties

Appears in sequences

• 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=9A122713
• Number of length 3+2 0..n arrays with the sum of second differences multiplied by some arrangement of +-1 equal to zero.at n=13A250562
• Prime numbersat n=7093