Task - sum of 2 prime number is given number
Program:
def find_prime(no):
div = 2
while div <= no // 2:
if no % div == 0:
return False
div += 1
else:
return True
prime1 = 2
target = int(input("Enter a number:"))
while prime1 <= target // 2:
prime2 = target - prime1
result = find_prime(prime2)
if result == True:
if prime1 + prime2 == target:
print(prime1, "+", prime2, "=", target)
prime1 = prime1 + 1
Output:
Enter a number:68
7 + 61 = 68
9 + 59 = 68
15 + 53 = 68
21 + 47 = 68
25 + 43 = 68
27 + 41 = 68
31 + 37 = 68
Task - Sum of 2 consecutive prime number is given number
Program:
def find_prime(no):
div = 2
while div <= no // 2:
if no % div == 0:
return False
div += 1
else:
return True
prime1 = 2
target = int(input("Enter a number:"))
i = 1
while i <= target // 2:
prime2 = prime1 + i
result = find_prime(prime2)
if result == True:
if prime1 + prime2 == target:
print(prime1, "+", prime2, "=", target)
break
else:
prime1 = prime2
i = 0
i += 1
Output:
Enter a number:68
31 + 38 = 68
Task - Express 68 and 128 as sum of two consecutive prime Number.
Program:
def find_prime(no):
div = 2
while div <= no // 2:
if no % div == 0:
return False
div += 1
else:
return True
j = 0
while (j < 2):
prime1 = 2
target = int(input("Enter a number:"))
i = 1
while i <= target // 2:
prime2 = prime1 + i
result = find_prime(prime2)
if result == True:
if prime1 + prime2 == target:
print(prime1, "+", prime2, "=", target)
break
else:
prime1 = prime2
i = 0
i += 1
j = j + 1
Output:
Enter a number:68
31 + 37 = 68
Enter a number:128
61 + 67 = 128
Task - Express 79 and 104 as the sum of any three primes.(TBD)
Program:
def find_prime(no):
div = 2
while div <= no // 2:
if no % div == 0:
return False
div += 1
else:
return True
j = 0
while(j < 2):
prime1 = 2
target = int(input("Enter a number:"))
while prime1 <= target // 2:
prime2 = 2
while prime2 <= target // 2:
prime3 = target - prime2 - prime1
if find_prime(prime1) and find_prime(prime2) and find_prime(prime3):
print(prime1, "+", prime2, "+", prime3, "=", target)
break
prime2 = prime2 + 1
prime1 = prime1 + 1
j += 1
Output:
Enter a number:79
3 + 3 + 73 = 79
5 + 3 + 71 = 79
7 + 5 + 67 = 79
11 + 7 + 61 = 79
13 + 5 + 61 = 79
17 + 3 + 59 = 79
19 + 7 + 53 = 79
23 + 3 + 53 = 79
29 + 3 + 47 = 79
31 + 5 + 43 = 79
37 + 5 + 37 = 79
Enter a number:104
2 + 5 + 97 = 104
5 + 2 + 97 = 104
13 + 2 + 89 = 104
19 + 2 + 83 = 104
23 + 2 + 79 = 104
29 + 2 + 73 = 104
31 + 2 + 71 = 104
41 + 2 + 61 = 104
43 + 2 + 59 = 104
Top comments (4)
Fantastic job!
Thank you sir
if not found:
print(target, "cannot be expressed as the sum of two consecutive primes")
Because if target = 7, it gives no output. Task: The sum of 2 consecutive prime numbers is the given number.
Ok bro ,thanks for your idea, I will change it.