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It will be quicker to try different powers of two, and seeing if the remainder is prime.
127 = 1 + 126, 126 isn't prime
127 = 2 + 125, 125 isn't prime
127 = 4 + 123, 123 isn't prime
127 = 8 + 119, 119 isn't prime
127 = 16 + 111, 111 isn't prime
127 = 32 + 95, 95 isn't prime
127 = 64 + 63, 63 isn't prime
127 < 128, so all the possibilities are exhausted.
So, 127 can't be expressed as a sum of a prime and a power of two.
What else can I help you with?
What number has a prime number in index form 2x3x5?
If the number can be written as 2*3*5 it cannot be prime!
What is the prime factors form for 729?
To find the prime factor form of a number, you need to divide it by prime numbers until no more divisions are possible. In this case, the digit sum of 729 is 9, so we know we can divide it by 9 (3x3). If we do this, we get 81. This is known from times tables to be 9x9. Thus the prime factorization of 729 is 3x3x3x3x3x3. This can also be written in prime power form as 36
What is every number greater than 1 can be written in prime factorization form?
It is a true statement.
What is every number greater then 1 can be written in prime factorization form?
Those are composite numbers.
What is the prime factorization in exponential form for the number 17?
None: 17 is a prime number.
What is 73 over 353 written in simplest form?
73/353 cannot be further simplified. 353 is a prime number.
What is the prime factorization for 62 written in exponental form?
2 x 31 = 62. You can write them all to the power of 1, but it's not necessary.
What is the square root of 593 in radical form?
Since 593 is a prime number, its square root will be written as the square root of 593.
What is a number for which the factor graph has exactly 9 points?
Any prime number to the eighth power, like 256 or 6561.
What is the prime factorization in exponential form for the number 5?
5 is already prime.
What is the prime factorization of 31 in exponential form?
None: 31 is a prime number.
What is 31 in its prime factor form?
Exactly as it is because 31 is a prime number
