All the even numbers and all the odd multiples of 5.
There are 15 prime numbers less than 50.
No.
No.
There are 168 prime numbers under 1,000 . There are also 25 primes under 100, 62 primes under 300, and 95 primes under 500
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If you look at the related question, "What are the prime factors of the numbers from 1 to 200?" (provided in the link below), take the prime numbers, and show them with multiplication signs between them, then you will have the prime factorization. Examples: The prime factors of 15 are 3 and 5. Therefore, the prime factorization is 3 x 5. The prime factors of 42 are 2, 3, and 7. Therefore, the prime factorization is 2 x 3 x 7. The prime factors of 64 are 2, 2, 2, 2, 2, and 2. Therefore, the prime factorization is 2 x 2 x 2 x 2 x 2 x 2. If you want the prime factorization of a specific number, it is sometimes listed under questions of the form, "What are the prime factors of __?" or "What are the factors of __?" or "What are the factors and prime factors of __?"
They are the multiples of 10, from 10 to 90.
Prime Numbers under 6 are 2,3,5
There are 34 prime numbers under 140.
The prime numbers under 16 are 2,3,5,7,11 & 13.
All the numbers from 2 to 19 are multiples of prime numbers.
168 prime numbers under 1000.
no, not all prime numbers are closed under addition. why? because, when you add 2 prime numbers you will not always get a prime number. example: 5+3= 8 5 and 3 are prime numbers but their sum is 8 which is a composite number..
There are 15 prime numbers less than 50.
2 x 5 = 10
the largest prime number under 100 is 97
No.