1 + 4 + 5 + 8 = 18
18 × 81 = 1458
1 + 7 + 2 + 9 = 19
19 × 91 = 1729
1 + 4 + 5 + 8 = 18
18 × 81 = 1458
1 + 7 + 2 + 9 = 19
19 × 91 = 1729

The Eye was rimmed with fire, but was itself glazed, yellow as a cat’s, watchful and intent, and the black slit of its pupil opened on a pit, a window into nothing.
That’s a quote from The Fellowship of the Ring, but this image is actually a star. Fomalhaut, 25 light-years away, is one of the brightest stars in the night sky.
Draw your own conclusions.

Hexakosioihexekontahexaphobia is fear of the number 666, which is linked to Satan and the Antichrist in the Book of Revelation.
Unfortunately, it’s rather hard to avoid. 666 is the sum of the squares of the first seven primes:
666 = 22 + 32 + 52 + 72 + 112 + 132 + 172
Also:
666 = 1 + 2 + 3 + 4 + 567 + 89
= 123 + 456 + 78 + 9
= 9 + 87 + 6 + 543 + 21
= 13 + 23 + 33 + 43 + 53 + 63 + 53 + 43 + 33 + 23 + 13
In 1989, after his second term as president, Ronald and Nancy Reagan moved to a new home in the Bel-Air section of Los Angeles. They had the address, 666 St. Cloud Road, changed to 668 St. Cloud Road.
102 + 112 + 122 = 132 + 142
If this magic square worked upside down, this one works when reversed, “mirrorwise”:
| 96 | 64 | 37 | 45 |
| 39 | 43 | 98 | 62 |
| 84 | 76 | 25 | 57 |
| 23 | 59 | 82 | 78 |
| 54 | 73 | 46 | 69 |
| 26 | 89 | 34 | 93 |
| 75 | 52 | 67 | 48 |
| 87 | 28 | 95 | 32 |
31415926535897932384626433832795028841 is a prime number.
It’s also the first 38 digits of pi.
In the decimal expansion for pi, the digits 16470 appear in position 16,470.
And the digits 44899 appear in position 44,899.
37 = 32 + 72 – 3 × 7 = (33 + 73)/(3 + 7)

In 1961, astronaut Gus Grissom nearly drowned after a splashdown when his Mercury capsule opened prematurely. He recommended making the hatch more secure.
Eight years later he died when Apollo 1 caught fire. The hatch had prevented his escape.

This compound, C4H5As, is known as arsole.
When it’s fused to a benzene ring, it’s called benzarsole.
No, I’m not above pointing that out.