No 45 is composite and not prime. 5 is the only number ending with 5 who is prime.
This is because any other number ending in 5 is a multiple of 5 and hence composite.
Same if true of 10, 20 and all those numbers ending in 0 except 0 itself.
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The prime number after 45 is 47.
The Prime Factors of 45 are 3, 5
First of all, 45 is not a prime number. The smallest prime bigger than 45 is 47.
The Prime Factors of 45 are 1, 3, and 5. In order to find the prime factors of 45, you need to find the factors of 45. The factors are: 1, 3, 5, 9, 15, and 45. The prime factors of 45 are those that have only 1 and the number itself as factors, so they are 3 and 5. Some think 1 is also a prime number, but it's neither prime nor composite.
The GCF of 45 and 76 is 1 The prime factors of 45 are 3,3,5 The prime factors of 76 are 2,2,19 Since the share no prime factors, the GCF can only be 1.