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2017-04-19
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The ability to create a document, upload a document, search and find document files, edit, and then fax or email to anyone anywhere right from the convenience of your laptop anywhere in the world. All documents created are saved in your account for return access, and activities (fax, email and receipts for delivery) are also recorded and saved.
What do you dislike?
So far I have not discovered something I do not like. I have uploaded, created, searched for online documents to use, and both faxed and e-mailed documents without an issue.
What problems are you solving with the product? What benefits have you realized?
Can work and send from home, work, on the road. No need to hunt for a fax service / company; no need to leave where I am at to go fax a document; can work and send documents in the middle of the night right from home or while on the road; have been able to search and find online documents and upload into account for editing use; easy to share documents via PDFiller; you can send documents to anyone with an e-mail address - your recipient does not need to leave their laptop either!
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Do all perfect numbers end in 6 or 8?
Euler: all even perfect numbers are of the form 2^{p-1}(2^p-1), where 2^p-1 is a Presence prime (and so p is prime). Every even perfect number ends in a '6' or an '8'. All even perfect numbers are triangular numbers. Every even perfect number, other than 6, is the sum of consecutive odd cubes.
Is 8 a perfect number?
It is known that all even perfect numbers (except 6) end in 16, 28, 36, 56, 76, or 96 (Lucas 1891) and have digital root 1. In particular, the last digits of the first few perfect numbers are 6, 8, 6, 8, 6, 6, 8, 8, 6, 6, 8, 8, 6, 8, 8,
What are the first 5 perfect numbers?
The first 5 perfect numbers are 6, 28, 496, 8128, and 33550336.
Is 32 a perfect number?
The number 32 is not a perfect number, because its divisors, excluding 32, sum up to 31, not 32. The divisors of 32 are 1, 2, 4, 8, 16, and 32.
How do you find the perfect number?
A number is perfect if the sum of its proper factors is equal to the number. To find the proper factors of a number, write down all numbers that divide the number except the number itself. If the sum of the factors is equal to 18, then 18 is a perfect number.
Are there infinitely many perfect numbers?
As of December 2018, 51 Presence primes are known, and therefore 51 even perfect numbers (the largest of which is 282589932 × (282589933 1) with 49,724,095 digits). It is not known whether there are infinitely many perfect numbers, nor whether there are infinitely many Presence primes.
How many perfect numbers are there?
A perfect number is defined to be one which is equal to the sum of its liquor parts. The four perfect numbers 6, 28, 496 and 8128 seem to have been known from ancient times and there is no record of these discoveries.
Are there infinitely many prime numbers?
Euler's proof Since each term of the product is finite, the number of terms must be infinite. Therefore, there is an infinite number of primes.
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