Question:
The L.C.M. of two prime numbers is 1271. Then what is the sum of those primes?
The L.C.M. of two prime numbers is 1271. Then what is the sum of those primes?
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For prime numbers, LCM equals their product—just factorize the given number.
Updated On: Apr 23, 2026
- 54
- 72
- 78
- 50
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The Correct Option is B
Solution and Explanation
Concept:
For two prime numbers, LCM = product of the numbers.
Step 1: Factorize 1271.
\[ 1271 = 31 \times 41 \]
Step 2: Identify primes.
\[ {Primes are } 31 { and } 41 \]
Step 3: Find sum.
\[ 31 + 41 = 72 \]
Hence, the sum of the primes is 72.
Step 1: Factorize 1271.
\[ 1271 = 31 \times 41 \]
Step 2: Identify primes.
\[ {Primes are } 31 { and } 41 \]
Step 3: Find sum.
\[ 31 + 41 = 72 \]
Hence, the sum of the primes is 72.
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