O'Nan Group

In the mathematical field of group theory, the O'Nan group or O'Nan–Sims group O'N is a sporadic simple group of order

29 · 34 · 5 · 73 · 11 · 19 · 31
= 460815505920

found by Michael O'Nan (1976).

The Schur multiplier has order 3, and its outer automorphism group has order 2.

O'N is one of the 6 sporadic simple groups called the pariahs, because they are not found within the Monster group.

Read more about O'Nan Group:  History, Representations, Maximal Subgroups

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