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GIMPS has discovered a new largest known prime number: 2^{82589933}1 (24,862,048 digits) Every number greater than 161 is the sum of distinct primes of the form 6n  1. [Wells] The smallest semiprime that yields a palindromic prime when turned upside down. [Ondrejka] The smallest phisemiprime: a semiprime formed by the initial digits of the decimal expansion of Golden Ratio. The sequence begins 161, 1618, 161803. 16180339887498948482, 16180339887498948482045868343 and so on. [Gupta]
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