Some numbers have sinister connotations, like Friday the 13th, while others are almost divine; here are 10 of the most famous numbers in the world

13

Seen as an unlucky number, it’s considered most sinister if the calendar date falls on a Friday; the number is important enough to have a fear named just after itself—triskaidekaphobia!

1.6180339887

or The Golden Ratio; denoted as Φ (phi), the golden ratio has fascinated intellectuals for almost 2,500 years as it describes perfect proportions & is also considered as the most aesthetically pleasing; you can find it everywhere—flower petals, sea shells, our fingers, animal bodies, spiral galaxies & even the Taj Mahal

3.14159...

Pi, the most famous mathematical constant, is the number you always get when you divide a circle’s circumference by its diameter. Pi’s digits run to almost a million, & it’s the only number to have a day all to itself—Pi Day, celebrated on Mar 14

3

Whether it’s the Holy Trinity in Christianity or the holy trio of Brahma-Vishnu-Mahesh in Hinduism, three has many divine associations in various religions; it’s also the first prime number & the smallest number of lines that make an enclosed space (a triangle)

007

The coolest number, thanks to James Bond, 007 brings to mind a suave, debonair man who can handle any crisis with elan while juggling, & keeping happy, multiple women

8

A symbol for love & friendship, even its sideways form ‘∞’ is very famous—the mark of infinity & eternity; its importance covers almost all fields, from an octave in music & 8-legged spiders to the eight spokes of the Buddhist dharmachakra & computer’s 8 bits that make a byte

10:10

The default setting for watches, the number is loved by horologists because it’s aesthetically pleasing—the upward hands look positive, they are symmetrical & don’t overlap, & the additional elements as well as the manufacturer’s logo can be clearly seen & it looks like a smile!

420

In Indian slang, the number describes a sly scoundrel & swindler, inspired from Section 420 of the Indian Penal Code relating to cheating & dishonesty; it’s sometimes accompanied by a numeric brethren, 9-2-11 (nau-do-gyarah), a slang for ‘run away’

666

Another malevolent number—called the ‘number of the beast’ in the New Testament; it’s a motif in various horror films & books, including the sinister The Omen. Not surprising that some people are so scared of it that they are said to suffer from 'hexakosioihexekontahexaphobia'.

Mathematically, it’s very interesting since it’s the sum of the first 36 natural numbers

Googol

The number that inspired the name of the search engine Google, a googol is the digit 1 followed by 100 zeroes; the term was invented by Milton Sirotta, the 9-year nephew of mathematician Edward Kasner, who thought that such a large number could only be called something as silly as a "googol"

13

1.6180339887

3.14159...

3

007

8

10:10

420

666

Another malevolent number—called the ‘number of the beast’ in the New Testament; it’s a motif in various horror films & books, including the sinister The Omen. Not surprising that some people are so scared of it that they are said to suffer from 'hexakosioihexekontahexaphobia'.

Mathematically, it’s very interesting since it’s the sum of the first 36 natural numbers

Googol