A122713 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.

4651, 16417, 16421, 16661, 56443, 60601, 61643, 65701, 71633, 71647, 106433, 163861, 169567, 172663, 205651

Offset

1,1

Links

Table of n, a(n) for n=1..15.

Example

4651, 4657, 4663, 4673 consecutive primes 4951, 4957, 4993, and 4973 are primes.

Crossrefs

Sequence in context: A227482 A028551 A031615 * A235235 A118815 A235183

Adjacent sequences: A122710 A122711 A122712 * A122714 A122715 A122716

Keyword

base,nonn

Author

Pierre CAMI, Sep 23 2006

Extensions

Corrected by T. D. Noe, Nov 16 2006

Status

approved