109 (number)

109 is the natural number following 108 and preceding 110.

Related Topics:
Natural number - 108 - 110

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{{Numbers_100s}}

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Cardinal one hundred nine

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Ordinal109th

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Factorizationprime

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Roman numeralCIX

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Binary1101101

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Hexadecimal6D

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One hundred nine (British English: One hundred and nine)is the 29th prime number, and also a Chen prime. The previous prime is 107, making them both twin primes. 109 is a centered triangular number. 109 is the smallest number which is palindromic in bases 5 and 9.

Related Topics:
British English - Prime number - Chen prime - 107 - Twin prime - Centered triangular number

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One hundred nine is also:

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• The atomic number of meitnerium.
• The registry number of the famous patrol boat PT-109, commanded by John F. Kennedy.
• The year AD 109 or 109 BC.