The dimensions of the perimeter wall are 528 cubits by 1040 cubits, roughly a 2 x 1 rectangle. The number 1040 must have been significant because Imhotep also used it for the overall length of Sekhemkhet's enclosure.

1040 cubits is significant because it is exactly five times the N-S width of the step pyramid, 208 cubits. The perimeter wall and the step pyramid are in a harmonic relation.

The height of both Sekhemkhet's and Djoser's enclosure walls is 20 cubits. 20 cubits divides into 1040 cubits 52 times. 52 is a calendrical number, being the number of 7-day weeks in a year.

There is a difference between the width of Sekhemkhet's and Djoser's enclosures. Sekhemkhet's enclosure is 500 cubits wide. The difference between the two widths (500 and 528) is 28. This is a calendrical number. It is the number of days in an 'Osirian' month (there are 13 of these months in a year), and also the number of fingers in a cubit. The calendrical significance is repeated in Khufu's pyramid, which has a height of 280 cubits.

The number 28 is also repeated in the total length of Djoser's perimeter wall, which is 3136 cubits. This number is 56 x 56, or 28 x 2 x 28 x 2.

The total perimeter of Sekhemkhet's enclosure wall is 3080 cubits, or 28 x 110. 3080 is also 7 x 440 cubits, or 7 times the base length of Khufu's pyramid. (Another way of stating this is that the base of Khufu's pyramid is 3080 palms.) Thus Khufu's pyramid is harmonically related to both the Sekhemkhet and Djoser enclosures.

The number 110 is used by Sneferu for the height in cubits of the upper portion of the Bent pyramid. Thus the Bent pyramid is harmonically related to Sekhemkhet's enclosure.

The 1040-cubit length of Sekhemkhet's enclosure is divided into three parts of 180 cubits, 500 cubits (making a 500 x 500 square around Sekhemkhet's unfinished pyramid) and 360 cubits. The base of the Bent pyramid is 360 cubits, and its semibase is 180 cubits, again relating it harmonically to Sekhemkhet's enclosure.