Three and forty-three hundredths
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The four factors of 343 are 1, 7, 49, and 343. The factor pairs of 343 are 1 x 343 and 7 x 49. The proper factors of 343 are 1, 7, and 49 or, if the definition you are using excludes 1, they are 7 and 49. The prime factors of 343 are 7, 7, and 7. The only distinct prime factor (listing each prime factor only once) of 343 is 7. The prime factorization of 343 is 7 x 7 x 7 or, in index form (in other words, using exponents) is 7^3.
x3-343
The factors of 343 are 1, 7, 49, 343. For them to be common, they need to be compared to another set of factors.
The factor pairs of 343 are (343,1) and (49,7)
The GCF of 343 and 125 is 1.