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GIMPS has discovered a new largest known prime number: 2^{82589933}1 (24,862,048 digits) The only sixdigit invertible prime p formed from the reverse concatenation of two threedigit consecutive strobogrammatic primes: {619, 181}. Curiously, p is also expressible as the sum of two squares: (659^2 + 430^2). [Jha]
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