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The divisibility rules of the 1st 10 powers of 2?
2: The number ends in 0, 2, 4, 6 or 8 4 : The last 2 digits are a multiple of 4 The 10s digit is even and the last digit is 0, 4 or 8 The 10s digit is odd and the last digit is 2 or 6 8: The last 3 digits are a multiple of 8 The 100s digit is even and the last 2 digits are a multiple of 8 The 100s digit is odd and the last 2 digits are 4 times an odd number 16: The last 4 digits are a multiple of 16 The 1,000s digit is even and the last 3 digits are a multiple of 16 The 1,000s digit is odd and the last 3 digits are 8 times an odd number 32: The last 5 digits are a multiple of 32 The 10,000s digit is even and the last 4 digits are a multiple of 32 The 10,000s digit is odd and the last 4 digits are 16 times an odd number 64: The last 6 digits are a multiple of 64 The 100,000s digit is even and the last 5 digits are a multiple of 64 The 100,000s digit is odd and the last 5 digits are 32 times an odd number 128: The last 7 digits are a multiple of 128 The 1,000,000s digit is even and the last 6 digits are a multiple of 128 The 1,000,000s digit is odd and the last 6 digits are 64 times an odd number 256: The last 8 digits are a multiple of 256 The 10,000,000s digit is even and the last 7 digits are a multiple of 256 The 10,000,000s digit is odd and the last 7 digits are 128 times an odd number 512: The last 9 digits are a multiple of 512 The 100,000,000s digit is even and the last 8 digits are a multiple of 512 The 100,000,000s digit is odd and the last 8 digits are 256 times an odd number 1,024: The last 10 digits are a multiple of 1,024 The 1,000,000,000s digit is even and the last 9 digits are a multiple of 1,024 The 1,000,000,000s digit is odd and the last 9 digits are 512 times an odd number
Are there any palindromic primes with an even number of digits greater than 11?
No, 11 is the only palindromic prime with an even number of digits.
Is 6618 divisible 3 6 and 9?
Yes, yes, and no. 3- sum of digits must be multiple of 3. 6- sum of digits must be multiple of 3 and number must be even (multiple of 2). 9- sum of digits must be multiple of 9. (The sum of the digits here is 21.)
64?
64 - D16, D16
8?
The last 3 digits are a multiple of 8:The 100s digit is even and the last 2 digits are a multiple of 8The 100s digit is odd and the last 2 digits are 4 times an odd number
32?
The last 5 digits are a multiple of 32The 10,000s digit is even and the last 4 digits are a multiple of 32The 10,000s digit is odd and the last 4 digits are 16 times an odd number
80?
The last 4 digits are a multiple of 80The 1,000s digit is even and the last 3 digits are a multiple of 80The 1,000s digit is odd and the last 3 digits are 40 times an odd number
What number has three digits is less than 140 has 7 for a factor is even and the sum of the three digits is less than 9?
The three digit number satisfying the requirements is 112. The three digit number must be greater than or equal to 100 and less than 140. To have 7 as a factor it must be a multiple of 7 To be even, it must be an even multiple of 7. The first even multiple of 7 greater than or equal to 100 is: 100 ÷ 7 = 14 r 2 → first even multiple is 16 × 7 = 112 The last even multiples of 7 less than 140 is: 140 ÷ 7 = 20 → last even multiple is 18 × 7 = 126 The sum of its digits must be less than 9: 112 → 1 + 1 + 2 = 4 126 → 1 + 2 + 6 = 9 → only 112 fits all the criteria.
What is the divisibility trick for 6?
Is the number even and do its digits total a multiple of 3?
How are the divisibility rules for 3 6 and 9 alike?
A number is divisible by 3 if the sum of its digits is a multiple of 3. A number is divisible by 6 if the sum of its digits is a multiple of 3 and it's even. A number is divisible by 9 if the sum of its digits is a multiple of 9.
What are those examples of prime numbers?
A prime number can be divided, without a remainder, only by itself and by 1. For example, 17 can be divided only by 17 and by 1.Some facts:The only even prime number is 2. All other even numbers can be divided by 2.If the sum of a number's digits is a multiple of 3, that number can be divided by 3.No prime number greater than 5 ends in a 5. Any number greater than 5 that ends in a 5 can be divided by 5.Zero and 1 are not considered prime numbers.Except for 0 and 1, a number is either a prime number or a composite number. A composite number is defined as any number, greater than 1, that is not prime
How do you multiple or divide 2 as prime number?
Multiples of 2 are all even numbers, but no even number greater than 2 is a prime number. 2 divided by 1 is 2, a prime number.
