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Digit Sum | Base-k Digit Sum | Weighted Digit Sum | Digit Product

# Calculate Digit Product and Multiplicative Digital Root

The digit product is the product (multiplication) of the ciphers of a number. To calculate, just type or paste any text with numbers into the field and press *Calculate digit product*. Characters, which aren't numbers, are counted, but ignored for the digit product and root. For the *multiplicative digital root*, the digit product is executed until the result is one-digit. The number of steps for this is called multiplicative persistence.

**Digit product**:

Example: the digit product of 1234 = 1*2*3*4 = 24

Like the digit sum, digit product and multiplicative digital root can be used as check values, but are less common. For many digits, they often become 0, because only one 0 is needed to cause this. If *without 0* is selected, the Zero as digit is ignored.

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