4920

This number is a composite.

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4920 is the smallest number that may be expressed as the difference between the squares of consecutive primes in four different ways (1231² - 1229² = 617² - 613² = 251² - 241² = 211² - 199²). [King]

Submitted: 2003-07-25 14:58:31; Last Modified: 2008-01-30 17:28:00.