The largest number wins!

[Ih8Lewis4ever]

100,200!

 

[BeenASon]

100,372!

 

[Ih8Lewis4ever]

100,500!

 

[Hedgehogthe3rd]

100,500!

200,000!

 

[Glasia]

1E+1000000
(200000! is just 1.42E+973350, cf https://www.wolframalpha.com/input?i=200000!)

 

[Ih8Lewis4ever]

1,000,000!