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GIMPS has discovered a new largest known prime number: 2^{82589933}1 (24,862,048 digits) Single Curio View: (Seek other curios for this number) 89 is the smallest prime that is a different number when turned upside down (in this case 68), which is the sum of the first n strobogrammatic numbers, i.e., 0+1+8+11+69 = 89. Does there exist a strobogrammatic number that is the sum of the first n strobogrammatic numbers?
Submitted: 20131110 19:23:27; Last Modified: 20140830 10:16:45.
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