A quick question:

100 * 100 = 10000 (5 digits)
900 * 900 = 810000 (6 digits)

not all sets of numbers with the same mubers of digits will result in a product with exactly double the number of digits. So is exactly 400 digits the requirement?

Just for fun.
John

In reply to Re: Finding Primes by johndageek
in thread Finding Primes by Tommy

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