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To calculate whether a number is a multiple of 7, double the last digit and subtract it away from the rest of the number. If this following number divides by 7 without a remainder, then the number is divisible by 7. Continue the process if necessary.

In this instance, 100 - (1 x 2) = 98/7 = 14. 1 - (4 x 2) = -7/7 = -1

Therefore, 1001 is a multiple of 7.

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Q: How do you know that 1001 is a multiple of 7?
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Is 1001 a factor of seven?

The positive factors of 1001 are: 1, 7, 11, 13, 77, 91, 143, 1001.


What is the least common multiple of 1001 and 13?

Least common multiple for 1001 and 13 is 1001.


What is a common multiple of 7 11 13?

1001, 2002, 3003 and so on.


What is the least common multiple of 77 and 1001?

LCM(77, 1001) = 1001


What is the lcm of 7 11 13?

1001


What times what equals 1001?

All numbers except primes themselves can be written as a multiple of two or more primes. So you just need to try dividing the number by prime numbers. Trying 13 gives 1001 = 13*77 = 13*7*11. 13, 7 and 11 are all prime numbers, so you know you have found the unique prime factorization of 1001.


How is 7 amultiple of 1001?

Because 7 times 143 = 1001


Is 1001 a composite number or prime number?

1001 is not prime. 1001 = 7 * 11 * 131001 is equal to 7 x 11 x 13, so it is composite.


Is 1001 prime?

no. 7*11*13 = 1001.


What are the factors of 1001?

The factors of 1001 are: 1 7 11 13 77 91 143 1001


Is 1001 a multiple of 5?

NO. All multiples of 5 have a final digit of 0 or 5. Therefore 1001 with its final digit of 1 is NOT a multiple of 5.


What are the factors and prime factors of 1001?

1001 is a composite number because it has factors other than 1 and itself. It is not a prime number.The 8 factors of 1001 are 1, 7, 11, 13, 77, 91, 143, and 1001.The factor pairs of 1001 are 1 x 1001, 7 x 143, 11 x 91, and 13 x 77.The proper factors of 1001 are 1, 7, 11, 13, 77, 91, and 143 or,if the definition you are using excludes 1, they are 7, 11, 13, 17, 91, and 143.The prime factors of 1001 are 7, 11, and 13.The 3 distinct prime factors (listing each prime factor only once) of 1001 are 7, 11, and 13.The prime factorization of 1001 is 7 x 11 x 13.NOTE: There cannot be common factors, a greatest common factor, or a least common multiple because "common" refers to factors or multiples that two or more numbers have in common.