Verifiers

Verification of the REGON number in Poland

Verifier allows you to validate entered REGON number

Long description

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Verifiers

Verification ISBN preview

Jak sprawdzić numer ISBN?
Jak zweryfikować numer ISBN?

Calculator allows you to verify the ISBN number entered.

63420

Verifiers

Verification of the social security number in Poland

It presents data deriving from the unique social security number, such as date of birth, sex, serial number and check its correctness.

53454

Verifiers

Verifier numbers EAN-13 preview

Verifier numbers EAN-13 Calculator allows you to verify the number entered EAN-13.

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Conversion between number bases

Converter allows you to convert numbers between number bases - binary (binary), trójkowym, czwórkowym, Friday, szóstkowym, siódemkowym, octal (octal), dziewiątkowym, decimal (decymalnym) jedenastkowym, dwunastkowym, trzynastkowym, czternastkowym, piętnastkowym, hexadecimal (hex). Typed characters that are not numbers and the letters A, B, C, D, E, F are ignored.

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Section properties of square tubing

Calculator to the data gives the properties of the square tube.

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Number of square-triangle (square triangular number)

Number of square-triangle has the properties of a square and a triangular number.