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GIMPS has discovered a new largest known prime number: 2^{82589933}1 (24,862,048 digits) T. D. Noe found that 2789 is the smallest prime that does not divide any term of the Lucas 4step sequence, i.e., Tetranacci numbers with different initial conditions: a(n)=a(n1)+a(n2)+a(n3)+a(n4), a(0)=4, a(1)=1, a(2)=3, a(4)=7. [Post] The only prime of form p=q*R(q)+q+R(q), where q is a doubledigit prime and R(q) its reversal, (q=29). [Loungrides]
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