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Q: What is the smallest prime number where each of the digits is a prime number 23 13 21 17?

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The number is 23.

You had me until "product." The product of 4 digits can't be prime.

It is 24578.

24578

The smallest number is 5,789. The largest is 98,750. The difference is 92,961.

Related questions

The number is 23.

2520. The number needs to have a prime factorization of 23*32*5*7=2520.

By the sum of its digits: 10. By each of its individual digits: 11.

Any two prime numbers, of about 200 digits each, would work.Any two prime numbers, of about 200 digits each, would work.Any two prime numbers, of about 200 digits each, would work.Any two prime numbers, of about 200 digits each, would work.

838

The four numbers are: 113, 131, 151 and 191. For the product of the digits to be prime, the number must contain 2 ones - which greatly simplifies the exercise.

You had me until "product." The product of 4 digits can't be prime.

7? (13579)

24578

It is 24578.

501396

773.