91 is the only composite factor of 91.
7 and 13 are prime.
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Of the numbers in your question, three are prime, and one is composite. The three prime numbers are 13, 37, and 101, and the composite number is 91. 91 is equal to 13 x 7.
67 is a prime number but 57 and 91 are both composite numbers
No. Prime numbers cannot be composite and composite numbers cannot be prime!
91 is a composite number. The factors of 91 are 7 and 13.139 is a prime number13 is a prime number29 is a prime number.
1 is special 2 prime 3 prime 4 composite 5 prime 6 composite 7 prime 8 composite 9 composite 10 composite 11 prime 12 composite ext.