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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