Fischer group Fi24

In the area of modern algebra known as group theory, the Fischer group Fi24 or F24 or F3+ is a sporadic simple group of order

   1,255,205,709,190,661,721,292,800
= 221 · 316 · 52 · 73 · 11 · 13 · 17 · 23 · 29
≈ 1×1024.