**Beaconaut APICalc 2 just released on Jan. 18, 2011**Click

**Here** to download Beaconaut APICalc 2 for

**30 DAY FREE TRIAL!****Beaconaut APICalc 2** is the leading arbitrary-precision integer calculator in the industry, it's designed for bignum arithmetic and cryptography analysis as well as number theory research for Personal, Academic or Commercial uses. Its speed of bignum arithmetic is dramatically fast with very powerful functionality and easy-to-use like a traditional handheld calculator.

In computer science, arbitrary-precision arithmetic is a technique whereby calculations are performed on numbers whose digits of precision are limited only by the available memory of the host system, It is also called bignum arithmetic, and sometimes even "infinite-precision arithmetic" (which is a misnomer, since the number of digits is both finite and bounded in practice).

Arbitrary precision is used in applications where the speed of arithmetic is not a limiting factor, or where precise results with very large numbers is required.A common application is public-key cryptography (such as that in every modern Web browser), whose algorithms commonly employ arithmetic with integers of hundreds or thousands of

digits.Arbitrary precision arithmetic is also used to compute fundamental mathematical constants such as Pi whose value is the ratio of any circle's circumference to its diameter in Euclidean space; this is the same value as the ratio of a circle's area to the square of its radius. Arbitrary-precision arithmetic can also be used to avoid overflow, which is an inherent limitation of fixed-precision arithmetic.

Bignum math is the backbone of modern computer security algorithms.

Most computer languages provide a kind of data called integer, but such computer integers are usually very limited in size; usually they must be smaller than 2^31 (2,147,483,648). If you want to work with numbers larger than that, you have to use floating-point numbers, which are usually accurate to only six or seven decimal places.

Arbitrary precision integer calculators that provide bignums can perform exact calculations on very large numbers, such as 1000! (the factorial of 1000, which is 1000 times 999 times 998 times ... times 2 times 1). For example, this value for

**1000!** was computed by

**Beaconaut APICalc 2** using bignums:

4023872600770937735437024339230039857193748642107146325437

9991042993851239862902059204420848696940480047998861019719

6058631666872994808558901323829669944590997424504087073759

9188236277271887325197795059509952761208749754624970436014

1827809464649629105639388743788648733711918104582578364784

9977012476632889835955735432513185323958463075557409114262

4174743493475534286465766116677973966688202912073791438537

1958824980812686783837455973174613608537953452422158659320

1928090878297308431392844403281231558611036976801357304216

1687476096758713483120254785893207671691324484262361314125

0878020800026168315102734182797770478463586817016436502415

3691398281264810213092761244896359928705114964975419909342

2215668325720808213331861168115536158365469840467089756029

0095053761647584772842188967964624494516076535340819890138

5442487984959953319101723355556602139450399736280750137837

6153071277619268490343526252000158885351473316117021039681

7592151090778801939317811419454525722386554146106289218796

0223838971476088506276862967146674697562911234082439208160

1537808898939645182632436716167621791689097799119037540312

7462228998800519544441428201218736174599264295658174662830

2955570299024324153181617210465832036786906117260158783520

7515162842255402651704833042261439742869330616908979684825

9012545832716822645806652676995865268227280707578139185817

8889652208164348344825993266043367660176999612831860788386

1502794659551311565520360939881806121385586003014356945272

2420634463179746059468257310379008402443243846565724501440

2821885252470935190620929023136493273497565513958720559654

2287497740114133469627154228458623773875382304838656889764

6192738381490014076731044664025989949022222176590433990188

6018566526485061799702356193897017860040811889729918311021

1712298459016419210688843871218556461249607987229085192968

1937238864261483965738229112312502418664935314397013742853

1926649875337218940694281434118520158014123344828015051399

6942901534830776445690990731524332782882698646027898643211

3908350621709500259738986355427719674282224875758676575234

4220207573630569498825087968928162753848863396909959826280

9561214509948717012445164612603790293091208890869420285106

4018215439945715680594187274899809425474217358240106367740

4595741785160829230135358081840096996372524230560855903700

6242712434169090041536901059339838357779394109700277534720

0000000000000000000000000000000000000000000000000000000000

0000000000000000000000000000000000000000000000000000000000

0000000000000000000000000000000000000000000000000000000000

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0000000000000000

**Main Features:**Addition, Subtraction, Multiplication, Division, Remainder operations.

Bitwise AND, OR, XOR and NOT operations.

Bitwise Left and Right Shift operations.

Modular multiplicative inverse.

Modular exponentiation.

Jacobi (Legendre) Symbal.

Factorial of n!.

Square root.

Square number.

Exponentiation.

GCD (Createst Common Divisor).

LCM (Least Common Multiple).

Dynamical Hex/Dec/Oct/Bin conversion.

Full on-line help and XP visual styles support.

Ten sets of build-in memory function on the calculator.

User-friendly and easy-to-use as a traditional handheld calculator.