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132 (another Prime Pages' Curiosity) |
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132 and its reversal (231) are both divisible by the prime 11 (132/11 = 12, 231/11 = 21). Note that the resulting quotients are also reversals. [Gevisier] The concatenation of its three distinct prime factors (2, 3, and 11) forms primes in three ways: 2311, 2113, and 1123. [Trotter]
The smallest composite number such that all its digits are necessary to write its prime factors. [Capelle]
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