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GIMPS has discovered a new largest known prime number: 2^{82589933}1 (24,862,048 digits) The smallest strobogrammatic prime p containing all the invertible digits formed by concatenating an invertible prime q (1086119) and the inverted q (6119801). Curiously, p is also expressible as the sum of two squares, i.e., (2591851^2 + 2035560^2). [Bajpai]
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