Prime Curios!: 1961

1961
(another Prime Pages' Curiosity)

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(1+9+6+1)*1961 + 1*9*6*1, (1!*9!*6!*1!)*1961 - 1, & (1*9*6*1)!*1961*prime(1961) + 1, are primes. Note that 1961 is the smallest number with such properties. [Firoozbakht]

Submitted: 2004-08-01 12:04:07; Last Modified: 2008-01-30 11:28:00.