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What is the smallest prime number that is 2 more than a multiple of 7?
It is: (3*7)+2 = 23
What number is a multiple of 2 3 5 and 7 with a remainder of 1?
211
Divisibility of 7623?
A number is a multiple of 7623 if it's a multiple of 7, 9 and 121 at the same time 7623 = 3^2 x 7 x 11^2 = 9 x 7 x 121 A number is a multiple of 7 if the difference between twice the last digit and the rest of the number is a multiple of 7 A number is a multiple of 9 if the sum of the digits is a multiple of 9 A number is a multiple of 121 if the difference between 12 times the last digit and the rest of the number is a multiple of 121 For example 15246 is a multiple of 7 because 1524 - 6 x 2 = 1512 and 1512 is a multiple of 7. It's a multiple of 9 because 1 + 5 + 2 + 4 + 6 = 18 and 18 is a multiple of 9. It's a multiple of 121 because 1524 - 6 x 12 = 1452 and 1452 is a multiple of 121. Since it's a multiple of 7, 9 and 121 it means it's a multiple of 7623
How will you know 51272347 can be divided by 7?
7324621
What is a multiple of 2 3 and 7?
The multiples of 2, 3 and 7 is 42.
