Fischer group Fi23
| Algebraic structure → Group theory Group theory | 
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In the area of modern algebra known as group theory, the Fischer group Fi23 is a sporadic simple group of order
- 4,089,470,473,293,004,800
- = 218 · 313 · 52 · 7 · 11 · 13 · 17 · 23
- ≈ 4×1018.