What is 2006 factorial?

2006! = 21447944787047798356.... It has 5756 digits and 500 trailing zeros.

Calculate the factorial of 2006 - Factorial Calculator

Quick Answer: 2006! = 2144794478...0000
5,756 digits | 500 trailing zeros

Factorial Calculator Until 10,000

Factorial Triangular Fibonacci

Enter a natural number (0 - 10,000):

2006! Result

21447944787047798356...00000000

How 2006! is calculated

The number of trailing zeros in 2006! is 500.
The number of digits in 2006 factorial is 5756.
In scientific notation: 2006! ≈ 2.144794 × 10⁵⁷⁵⁵
The factorial of 2006 is calculated, through its definition, this way:
2006! = 2006 • 2005 • 2004 • 2003 • 2002 ... 3 • 2 • 1

Exact value of 2006!

2006! = 21447944787047798356289733585461687553416265254260341025261946656030631120349019878267076858859826112647360832653065038354423127185987909770952383693736750264163578058069369869487757309715998660640457717889450334028920005211791829943751822508857311394555482570181537626686181593910794484826493732974429663312580665371476784861905147818045372443819621405014299561562352575285763336008590394949433714723072108245080962066063272207196523185482345926674772886452157725654846133920298130028814135167505177573836022000950727324929055863113340174796462522849608502640060702704022853271936644060035959087341109735685730380997049201796961368985997641727418918867562631906411828148836291407636072229869880557263786451529208748911406736967743129054646378834128961638880577347530056986804535063735191924202926759716657651693806491627070767216503690657952784242364816561888337782188906207108252965653238079754610353308166538218115192791228347948764825458851695258831410386084614934848839348430571092954014488415903207255121154143976013912146315543761917658321670071425878447216929463519960218684772490182534684688304964365038136010056926135239347558553735812696668907476929777340900032307848232920482778141963358172140698948072246374555481816546584094235905332724788299407661349043027539911848581196972619135509373689219261269923579663138664403814499229663130220643874935695853579678497146677640884785081449440150406663322510437228328799032439736962158083388114966464699379050429948649917542279978390858094901409823610980578914103982974322503257050277681650940582242362402224273193936416033038005868515549979438745216385018715556151423435461759658012640098186814465929094994943310338124093214917259147999575093830660911925596020136536723276580583074213049248409586849449724991813154844237007289452773319552727624192424415921256232062376427024188811183912654870067856445823718933000736207455163392861367311301403911639092211056230305550305071343924793126032925041032712725751808381979121363493342666338757113026901741936398504046750737486160982035173288862349197071295842667651521945487128042422566998577808278066265160233245306128289541447109117507065612309638364124049777712234946416790526178169503096532342199737899259136990769759470517991807550331450104323536587557552471402814979606745417951177432198740043278726533536621088085247785093616474584669660465639412110274505183819528685257847131122674625337822632614428238143627133606046699178772710657771080942940755795218756203257923981155617997834825432210296563100785529136089251042635613144831509340268870567293596382276835471333243915496150209487797108055515172108874237874333319626822874714883202578315562021526256352036466658411126278005046876517506981739637662256128782996226637698606588757475596062067701023192910194143034776385990135410353741664791270301595611296483113713688794395091259474250727313948256708248137986760934670688123277818937687163206693070685340318760003197043174146009298963040387874639075538624514538954558190634044559983083724298567882917722496036753844622014231134116786912031862230515489047836562422081256642168421302152917636328375228044765703777199878045977666910417849888424440238599593635363551516807060223139444994653166622242077705597215523167978690361338201054171418461748182062790189731892411212819375061595985296966694568263760965448081761507172637366396128689839681758450323775918381996748650561591657478094535850506221406333398983091920147442551978524022450893859009231122502750588061140174587462812500360461185004141726865214321187101667928252889957188901261120672418117035801028205612533607210022949254241093648538295406063221469630661508033006996375857148395519050582427814243078662123839859446573762788707888240653820408787642490815934607491177831394639523641540136316085733103121710910736038246271326195126330583483213609867744789416900012509716030803278257278889681182828329472377365702187359851574324535284560204796623569423819414901097450838227019055692542149636713323259379699392714794739732965166322642418135499842715598734487914321025936532386049317219256512659241184552106821959100666672378194063926641874722267079975152347196150254270142234511015505916716512175733885625093329503387398976249281897262396996663239156645071606404075108896941512267949272078579828389365077309979001572805616850288037997650836577141089125550342359511814440444903358536767569210640352687910573396056648054817674916090539717595399133762203305589150279253135830532894637283382111244574476873159532892784304066124889802109586418443733606858215078603862982682352398396255322960194177391870361492450904300320926487185977676909767650593803799224731183067100413928369546976885080625839519455325255277829115479546794611303905999292131189703983004564524551442001842637825837824119407246972516566599189640975530576800324900617546291338177336969065636000670946582400919955341790235093455939370622564356088663795779372041400157716723335531424645549425513958742935291224958896767078230901580595117863782984856094722352972026034945665547152774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Nearby Factorials

n	n!	Digits	Trailing Zeros
2001!	66358664...0000	5,739	499
2002!	13285004...0000	5,743	499
2003!	26609864...0000	5,746	499
2004!	53326168...0000	5,749	499
2005!	10691896...0000	5,753	500
2006!	21447944...0000	5,756	500
2007!	43046025...0000	5,759	500
2008!	86436418...0000	5,762	500
2009!	17365076...0000	5,766	500
2010!	34903803...0000	5,769	501
2011!	70191549...0000	5,772	501

More factorial calculations

Here you can find answers to questions like: Calculate the factorial of 2006 What is the factorial of 2006? What is the last digits of factorial of 2006? How many trailing zeros in 2006 factorial? How many digits are there in 2006 factorial? Use the factorial calculator above to find the factorial of any natural between 0 and 10,000.

What is factorial?

Definition of factorial

The factorial is a quantity defined for any integer n greater than or equal to 0.

The factorial is the product of all integers less than or equal to n but greater than or equal to 1. The factorial value of 0 is, by definition, equal to 1. For negative integers, factorials are not defined. The factorial can be seen as the result of multiplying a sequence of descending natural numbers (such as 3 × 2 × 1).

The factorial symbol is the exclamation mark (!).

The factorial formula

If n is a natural number greater than or equal to 1, then

n! = n x (n - 1) x (n - 2) x (n - 3) ... 3 x 2 x 1

If n = 0, then n! = 1, by convention.

Example: 6! = 6 x 5 x 4 x 3 x 2 x 1 = 720

Shortcut to find trailing zeros in a factorial

Trailing zeros are a sequence of zeros in the decimal representation of a number, after which no other digits follow. This video shows how to find the trailing zeros of a factorial easily.

Table of factorials until 30

n	n!
1!	1	#
2!	2	#
3!	6	#
4!	24	#
5!	120	#
6!	720	#
7!	5040	#
8!	40320	#
9!	362880	#
10!	3628800	#
11!	39916800	#
12!	479001600	#
13!	6227020800	#
14!	87178291200	#
15!	1307674368000	#
16!	20922789888000	#
17!	355687428096000	#
18!	6402373705728000	#
19!	121645100408832000	#
20!	2432902008176640000	#
21!	51090942171709440000	#
22!	1124000727777607680000	#
23!	25852016738884976640000	#
24!	620448401733239439360000	#
25!	15511210043330985984000000	#
26!	403291461126605635584000000	#
27!	10888869450418352160768000000	#
28!	304888344611713860501504000000	#
29!	8841761993739701954543616000000	#
30!	265252859812191058636308480000000	#

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