22251
Verifiers
Verification of the REGON number in Poland
Verifier allows you to validate entered REGON number
Long description
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76706
Verifiers
Verification ISBN preview
Jak sprawdzić numer ISBN?
Jak zweryfikować numer ISBN?
Jak zweryfikować numer ISBN?
Calculator allows you to verify the ISBN number entered.
63553
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.
53627
Verifiers
Verifier numbers EAN-13 preview
Verifier numbers EAN-13
Calculator allows you to verify the number entered EAN-13.
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Math
GCD + LCM (Euclidean algorithm)
GCD + LCM (alg. Euclid)
The calculator calculates the greatest common divisor (GCD) and least common multiple (LCM) of two numbers.
Long description
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Your first \ u0105 numbers \ u0119
1036265
Building
Insulation of wall
Jak policzyć izolację ścian?
Calculator allows you to calculate the amount of insulation panels needed to cover the walls of the building using the "light wet" or "dry light" methods.
45028
Life
Battery life
Calculator based on the specified battery capacity and consumption estimates the time. Calculator does not take into account changes in CPU speed and action in the case of ACPI computers.
58932
Financial
Net return on sales (ROS)
Calculator based on the values entered and net profit calculated return on sales ROS. ROS announces net income (after tax), attributable to every penny of products, goods and services.