108 is the natural number following 107 and preceding 109.

In mathematics

One hundred ^* eight is an abundant number, a tetranacci number.

It is the hyperfactorial of 3 since it is of the form $1^1\; \backslash cdot\; 2^2\; \backslash cdot\; 3^3$.

108 is a number that is divisible by the value of its φ function, which is 36. 108 is also divisible by the total number of its divisors (12), hence it is a refactorable number.

In normal space, the interior angles of an equilateral pentagon measure 108 degrees each.

There are 108 free polyominoes of order 7.

In base 10, it is a Harshad number and a self number.

In other fields

• The number of beads on a mala (Sanskrit word for a rosary of beads) usually has beads for 108 repetitions of a mantra.
• The atomic number of hassium.
• In Homer's Odyssey, the number of suitors coveting Penelope, wife of Odysseus.
• Chinese astrology and Tao philosophy holds that there are 108 sacred stars. (This legend is the basis of the Suikoden series of video games: each of the 108 playable characters represents a star in Chinese astrology).

• 108 Stars is also the name of a group of space pirates who use Tao magic in the anime Outlaw Star.

  • Several different tai chi long forms consist of 108 moves.

• It is a sacred number in Hinduism used and referred to in a variety of manners.
• In Japan, at the end of the year, a bell is chimed 108 times to finish the old year and welcome the new one. Each ring represents one of 108 earthly temptations a person must overcome to achieve nirvana.
• Hindu deities have 108 names. Recital of these names, often accompanied by counting of 108-beaded Mala, is considered sacred and often done during religious ceremonies. The recital is called namajapa.
• It is described in the Srimad Bhagavatam that Krishna dances with 108 'Gopis' (cow-herd girls) in His Vrindavan pastimes, and later marries 16,108 wives in His city of Dwarka. Hare Krishna devotees thus hold 108 as a number of great significance.
  • A symbol of Siva among the Saivites, for Siva Nataraja dances his cosmic dance in 108 poses.
• Apart from Hinduism, it is also held sacred or otherwise significant by various Buddhist, Sikh, and Jain traditions.
• The number of surat al-Kawthar in the Qur'an, the smallest one of the Book.

• The year AD 108 or 108 BC.
• The number of stitches on a baseball.
• A 'krishnacore' hardcore punk band ^*
• The number of sins in Tibetan Buddhism.
• A central number in the television drama Lost.
• The number of minutes that cosmonaut Yuri Gagarin orbited the earth during the first manned space flight.
• The number of "missing" episodes of the BBC television program Doctor Who, destroyed in the 1970s.
• The number of Mbit/s of a non-standard extention of IEEE 802.11g wireless network using channel bonding.

External links

• Why 108? Article on the symbolism of the number 108.
• Would YOU press that button? A LOST clock simulator that counts down from 108 minutes.

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