Reading these numbers

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Reading these numbers

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Author | Message |
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SCV-9000 Send message Joined: 26 Apr 10 Posts: 2 Credit: 53,718 RAC: 0 |
Excuse my question, but how do you read these numbers. Are they hexadecimal or like binary code? |

Greg Project administrator Send message Joined: 26 Jun 08 Posts: 584 Credit: 236,250,424 RAC: 30,592 |
The numbers that are currently being sieved are 2,1031- and 5,389-. This is a common notation for the numbers 2^1031 - 1 (i.e., 2 to the 1031 power minus 1) and 5^389 - 1. Of course, whenever possible, we take out algebraic factors. For example, our next number, 2,979+ (or 2^979 + 1) is divisible by 2^89 + 1 leaving the long but useful 2^890 - 2^801 + 2^712 - 2^623 + 2^534 - 2^445 + 2^356 - 2^267 + 2^178 - 2^89 + 1 It is this latter, smaller number we will actually be factoring. For brevity, though, we still refer to this as 2,979+. |