149

This number is a prime.

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149 in binary is 10010101. The zeros are in prime positions 2, 3, 5 and 7, when read left-to-right. These are the four single-digit prime numbers. [Homewood]

Submitted: 2010-12-14 18:34:46;   Last Modified: 2020-06-14 01:12:21.
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