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How many three digit numbers have odd prime number as 1st digit A prime number as 2nd digit and an odd number as 3rd digit?
There are 17 such numbers.
What is the largest 3 digit even number that is the product of three prime numbers?
2 x 7 x 71 = 994
What is the smallest three-digit number divisible by the first three prime numbers and the first three composite numbers?
The smallest three-digit number divisible by the first three prime numbers (2, 3, and 5) and the first three composite numbers (4, 6, and 8) is 120.
What is the product of all whole numbers less than the cube root of the largest 3 digit prime number?
It doesn't matter if you know that the largest three-digit prime number is 997 or that its cube root is 9.98998998. If you include zero in the whole numbers, the answer will be zero.
Is 56 a product of three prime numbers?
no
Is 15 a product of three different prime numbers?
15 is the product of two prime numbers; 3 x 5
Why can't the product of two 2-digit numbers ever be two digit?
The product of two 2-digit numbers cannot be a two-digit number because the smallest two-digit number is 10, and the smallest product of two 2-digit numbers (10 × 10) is 100. Since 100 is a three-digit number, any multiplication of two 2-digit numbers will yield a product that is at least 100 or more. Therefore, the product must always be three digits or greater.
What is the sum of the three largest two-digit prime numbers?
269
What is the least three-digit number that is divisible by three different prime numbers?
102.
What three digit number has the most factors?
Using prime factorization, there are 2 three digit numbers with 9 factors: 512 and 768. There are no three digit numbers with 10 or more prime factors. 512=2^9 and 768=3*2^8
What are the first 3 prime numbers containing the digit 7?
The first three prime numbers containing the digit 7 are:7, 17, 37
Is 15 a number that is a product of exactly three different prime numbers?
No. 15 is the product of two prime numbers: 3 and 5
