Asked by kim

Find all the numbers between 1 and 1000 that have 2 their only prime factor?

I can't do it alone some help me!!!!!!!!!!!
Answered by kim
hi i want to see if this works
Answered by drwls
The only such numbers are the powers of 2 that are < 1000: 2, 4, 8, 16, 32, 64, 128, 256, and 512. All other numbers are either non-prime or, if prime, are not divisible by 2,