13 is not an unlucky number it is superstitious. I love the number 13
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It is the 6th prime number.
13 and all its multiples are divisible by 13.
Its the thirteenth number. It's abosolute value is 13. It's opposite is -13. If you add 87 to it, it equals 100. It's before 14. It's after 12. Its a natural number. 13x2 is 26. It's a real number. Its rational (it can be turned into a fraction). (Just for fun.) It is supposedly an unlucky number.
Because all of its factors also known as 13 and 1 add up to be more than the number itself 13.
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