康威群(英語:Conway groupCo1Co2Co3是三個散在群,由英國數學家約翰·何頓·康威發現。[1][2]

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康威群都是通過利奇格(Leech lattice)構造得到的。它們的分別為:

Co1:4,157,776,806,543,360,000 = 221 · 39 · 54 · 72 · 11 · 13 · 23
Co2:42,305,421,312,000 = 218 · 36 · 53 · 7 · 11 · 23
Co3:495,766,656,000 = 210 · 37 · 53 · 7 · 11 · 23

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