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423! Factorial of 423

Value of 423! i.e, Factorial of 423 =
88665615014319916975
91025800112598849822
60754265454109274604
38352203709193261742
78727907267319963612
14483801781411748093
31395015947632184245
43923132076645224083
45932269222881739609
20262855828560240272
37531174070595841175
61773763988140680467
00513869527457051034
07500143610907469754
56154437388627457981
96083469951900479102
83560783966292344594
55456418906226903245
11350675865236354225
04792412981911365324
57610236311624729809
48595497325993056714
05211885420073450285
67220178430635905884
12391587792333131601
32515070879904554336
62231118329554303165
61093421748368548856
63465070275279768247
28284578729180387634
24470233834482230569
33592413857420893274
84386272831569936401
64809224781370229618
96640307869590394488
72935760433260701288
72767416219674516689
62748624231418421327
99744336625115027515
45523027216235678582
32082559884529199965
27411200000000000000
00000000000000000000
00000000000000000000
00000000000000000000
00000000000000000000
000000000



In general, the factorial of a number N = N*(N-1)*(N-2)....1
Factorial of a non-negative integer n is the product of all positive integers less than or equal to n. Factorials are commonly encountered in permutations, combinations, number theory and series expansions of trigonometric and other functions (Taylor series).

Number of trailing zeros in 423! = 103
To understand factorials, you might find it useful to read the Factorial tutorial over here.
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