No, prime numbers refer to whole numbers, not decimals.
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As even numbers, none of 138, 172 or 432 can be prime.As the sum of the digits of the number is equal to 9, 441 cannot be prime.
The prime factors of 441 are: 3, 7
441 = 32 x 72
3 x 3 x 7 x 7 = 441
The prime factorization of 441 is: 3 x 3 x 7 x 7 or 3^2 x 7^2441=3*3*7*7