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  2. Google Voice - Wikipedia

    en.wikipedia.org/wiki/Google_Voice

    Website. voice .google .com. Google Voice is a telephone service that provides a U.S. phone number to Google Account customers [1] in the U.S. and Google Workspace (G Suite by October 2020 [2]) customers in Canada, Denmark, France, the Netherlands, Portugal, Spain, Sweden, Switzerland, the United Kingdom and the contiguous United States. [3]

  3. Square-free integer - Wikipedia

    en.wikipedia.org/wiki/Square-free_integer

    In mathematics, a square-free integer (or squarefree integer) is an integer which is divisible by no square number other than 1. That is, its prime factorization has exactly one factor for each prime that appears in it. For example, 10 = 2 ⋅ 5 is square-free, but 18 = 2 ⋅ 3 ⋅ 3 is not, because 18 is divisible by 9 = 3 2. The smallest ...

  4. 30 Scam Phone Numbers To Block and Area Codes To Avoid - AOL

    www.aol.com/finance/19-dangerous-scam-phone...

    Search the phone number you suspect is a scam on Google. If anyone has reported it to a website that tracks scams, ... 888 numbers indicate it is a toll-free call. Calls made to toll-free numbers ...

  5. Carmichael number - Wikipedia

    en.wikipedia.org/wiki/Carmichael_number

    Carmichael number. In number theory, a Carmichael number is a composite number which in modular arithmetic satisfies the congruence relation : for all integers . [1] The relation may also be expressed [2] in the form: for all integers that are relatively prime to . They are infinite in number.

  6. Telephone numbers in Turkey - Wikipedia

    en.wikipedia.org/wiki/Telephone_numbers_in_Turkey

    National (significant) number: 10 Digits. Area code: 3 digits; Local subscriber's number: 7 digits. Only exception in this is the call center numbers which start with 444, the call center numbers cannot be dialed with area code, they must be dialed with 7 digit from any phone (Landlines & Mobiles) in the country. The number format is 444 XX XX.

  7. Caller ID spoofing - Wikipedia

    en.wikipedia.org/wiki/Caller_ID_spoofing

    Caller ID spoofing. Caller ID spoofing is a spoofing attack which causes the telephone network's Caller ID to indicate to the receiver of a call that the originator of the call is a station other than the true originating station. This can lead to a display showing a phone number different from that of the telephone from which the call was placed.