55

This number is a composite.

Single Curio View: (Seek other curios for this number)

A solution to the "Prime Queen Attacking Problem" including a configuration of maximal primes attacked for a Bishop (7 on one diagonal and 6 on the other). Found by Alessandro Casini of Italy in September 2023:


11 14 39 60 09 64 07 62
38 41 10 13 54 61 58 01
15 12 53 40 59 08 63 06
42 37 50 55 52 05 02 57
49 16 43 36 29 56 25 04
44 19 46 51 24 03 30 33
17 48 21 28 35 32 23 26
20 45 18 47 22 27 34 31

Submitted: 2023-10-05 01:03:56; Last Modified: 2023-10-16 15:46:51.