172663

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=13A122713
• Number of permutations of length n which avoid the patterns 4312 and 1324.at n=11A165526
• Irregular triangle T(n,k) where row n contains the maximal nodes in the graph of XOR connected primes of interval [2^n+1,2^(n+1)-1], n>=4.at n=26A200321
• Numbers k such that (42^k + 1)/43 is prime.at n=5A231604
• Prime numbersat n=15727