101

This number is a prime.

Just showing those entries submitted by 'Bui Quang Tuan': (Click here to show all)

+ Prime Numbers 101: Consider the first four primes, i.e., 2, 3, 5, 7. Now, 2*3 + 5*7 = 41, 2*5 + 3*7 = 31, and 2*7 + 3*5 = 29 (all prime). Let's add them: 41 + 31 + 29 = 101. [Bui Quang Tuan]

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