The 451 (number) reference article from the English Wikipedia on 24-Apr-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

451 (number)

451 (Four hundred and fifty-one) is the natural number following 450 and preceding 452.

451
Cardinal	Four hundred and fifty-one
Ordinal	Four hundred and fifty-first
Factorization
Roman numeral	CDLI
Binary	111000011
Hexadecimal	1C3

It is a Wedderburn-Etherington number.

Four hundred fifty-one is:

• In Fahrenheit, the ignition temperature of paper. Therefore, Ray Bradbury titled his dystopian novel about book burnings Fahrenheit 451.
• The year AD 451.

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