127

This number is a prime.

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127 = 1*prime(1) + 2*prime(2) + 7*prime(7). Note that 127 is the largest number with this property. There are only two such numbers, and both are primes. [Firoozbakht]

Submitted: 2004-09-01 11:25:13;   Last Modified: 2008-01-30 11:28:00.
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