Prime Factorization Calculator - Factor 20-Digit Numbers (original) (raw)

| Prime Factors Calculator – 20 digits! | | | --------------------------------------- | |

JavaScripter.net|Math with JavaScript|Divisors|Totient|100+ Digit Calculator

Input a number:	Show repeated factors as p_^_k	Run time:

This fast factoring calculator is written entirely in JavaScript. Unlike many other JavaScript calculators, it does not have the usual 16-digit limit (up to 253 = 9007199254740992, hence 16 digits only). Here, you can factor 20-digit numbers. In modern browsers, this calculator does most factorizations within a second. In rare worst-case scenarios (for some large semiprimes with 10-digit factors) factorizations might take a couple of minutes. Enjoy!

SOME TEST CASES FOR PRIME FACTORIZATION: 9007199254740881 (the largest prime under 2^53) 9007199254740997 (the smallest prime over 2^53) 9007199254740991 = 63616943120394401 9007199254740992 = 2^53 9007199254740993 = 310728059810762433 9999986200004761 = 9999993199999931 99999989237606677 = 316227731316227767 999999866000004473 = 999999929999999937 9999999942014077477 = 31622776333162277669 99999980360000964323 = 99999990179999999019 99999980380000962361 = 99999990199999999019 99994452415200570527 = 464150346415034641503 99999999999999999999 = 3311411012713541909127961 10000000000000000001 = 11*909090909090909091