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This number is a composite.
Just showing those entries submitted by 'Gupta':
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6 is the smallest composite number whose sum of prime factors is prime. [Gupta]
The only perfect number that can be sandwiched between twin primes. [Gupta]
The product of the first four nonzero Fibonacci numbers. Note that 6 + 1 and 6 - 1 are twin primes. This is the smallest such product of consecutive nonzero Fibonacci numbers. [Gupta]
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