Prime factorization:
143 = 11 x 13
231 = 3 x 7 x 11
11 x 13 x 3 x 7 = 3003 (the LCM of 143 and 231).
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LCM: 5720 GCD: 11
Factorizations for 231 are: 1) 231 = 1x231 2) 231 = 3x7x11 3) 231 = 21x11 4) 231 = 3x77 5) 231 = 33x7
To find the lowest common multiple (LCM) of two numbers, you first need to find the prime factors of each number. The prime factors of 154 are 2, 7, and 11, while the prime factors of 231 are 3, 7, and 11. To calculate the LCM, you multiply each prime factor the greatest number of times it occurs in either number: 2 x 3 x 7 x 11 = 462. Therefore, the lowest common multiple of 154 and 231 is 462.
231 + 194 = 425
143