I'm afraid I strongly disagree with Romer on many issues.
This is just another one of them.
I don't think he has, nor anyone else has, a shred of evidence to support this Old Kingdom fascination with occult mathematics. There's just nothing to suggest it was ever really important to Egyptians whatsoever. They were practical about math. Other than a few significant numbers, like 3, 4 and 7... it simply wasn't a factor in their spirituality or magic.
Twisting translations of later texts to support these speculations doesn't prove anything, either.
I know that won't sit well with some, but I've spent years studying this culture and it just isn't there.
Anthony
You can lead a horse to water but you can't make him think.