91 = 13 x 7
Can't go any further as both 13 and 7 are prime numbers.
Chat with our AI personalities
91 7,13 7 x 13 = 91
To find the prime factorization of a number start with any factor pair and keep factoring the composite numbers until all the factors are prime. 279 3 x 91 3 x 7 x 13 = 279
The number 455 ends with a 5, thus it is divisible by 5; 455/5 = 91. 91 is a tricky number, because it's hard to tell that it's not prime. If you couldn't see that 91 is divisible by 7, then I recommend expanding your multiplication table for 7. 91/7 = 13, and since both 7 and 13 are prime numbers, the prime factorization of 455 is 5 X 7 X 13.
lcm(13, 39, 91) = 273 Using prime factorization: 13 = 13 39 = 3 x 13 91 = 7 x 13 lcm = 3 x 7 x 13 = 273
The prime factors of 91 are: 7, 13