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Label Polynomial Discriminant Galois group Class group
21.21.250...416.1 x21 - 42x19 + 756x17 - 7616x15 - 34x14 + 47040x13 + 952x12 - 183456x11 - 10472x10 + 448448x9 + 57120x8 - 658224x7 - 159936x6 + 522144x5 + 213248x4 - 156800x3 - 106624x2 - 18816x - 896 \( 2^{18}\cdot 7^{31}\cdot 67^{7} \) 21T26 trivial (GRH)
21.7.948...608.1 x21 - 42x19 + 756x17 - 7616x15 - 20x14 + 47040x13 + 560x12 - 183456x11 - 6160x10 + 448448x9 + 33600x8 - 657588x7 - 94080x6 + 513240x5 + 125440x4 - 121184x3 - 62720x2 - 54432x - 3760 \( -\,2^{18}\cdot 7^{30}\cdot 107^{7} \) 21T26 trivial (GRH)
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