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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) Divisibility test for 11: Combine the digits in order by alternating them with positive and negative signs. If the result is divisible by 11, then so is the original number. For example, 11 divides 90816 because 11 divides + 9  0 + 8  1 + 6. [Beedle]
Submitted: 19990902 18:40:00; Last Modified: 20080904 19:36:14.
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