# Beta version#

BETA TEST VERSION OF THIS ITEM

This online calculator is currently under heavy development. It may or it may NOT work correctly.

You CAN try to use it. You CAN even get the proper results.

However, please VERIFY all results on your own, as the level of completion of this item is NOT CONFIRMED.

Feel free to send any ideas and comments !

This online calculator is currently under heavy development. It may or it may NOT work correctly.

You CAN try to use it. You CAN even get the proper results.

However, please VERIFY all results on your own, as the level of completion of this item is NOT CONFIRMED.

Feel free to send any ideas and comments !

# Calculations data - prefered gender and date of birth#

Gender | |||||

Gender | |||||

Date of birth | |||||

From | |||||

To | |||||

Age | |||||

From | |||||

To | |||||

Generate more PESEL numbers |

# Result - generated PESEL number (random)#

85070206745

40100402689

24021104626

05103001396

92101602544

40100402689

24021104626

05103001396

92101602544

# Some facts#

**PESEL number**is a unique number, that identifies each**physical person in Poland**.- The PESEL number is assigned
**after birth**, after**gender change**(see → hormone replacement therapy), or in order to**correct the error**detected in already assigned number. - The PESEL number consists of 11 digits with below meaning:

**birth of date**(first 6 digits) - date of birth in YYMMDD format (year, month, day),

**serial number**(next 4 digits) - ordinal number identifying subsequent people born on the same day,

**control digit**(last digit) - an additional digit calculated from previous tens, used to check the correctness of whole number.

- Numbers denoting the month of birth also have an additional function defining the
**centenary**:

- numbers
**from 1 to 12**mean subsequent months in**years 19xx**(born in XX century),

- numbers
**from 21 to 32**are used for those born in years**20xx**(born in XXI century),

- numbers
**from 41 to 52**are reserved for those born in**years 21xx**(born in XXII century),

- numbers
**from 61 to 72**are reserved for those born in**years 22xx**(born in XXIII century),

- numbers
**from 81 to 92**are used for those born in**years 18xx**(XIX century).

- numbers
- The
**serial number**also encodes**gender**. Men get**odd**number (e.g. 121), while woman get**even**ones (e.g. 200). - The
**control digit**(sometimes called checksum) is used to**detect errors**resulting from accidental changes of one or more digits, e.g. during manual number rewriting in the office. It is calculated on the basis of the remaining 10 digits according to the following algorithm:

$\left(\underbrace{ \overbrace{9 y_1 + 7 y_2} ^ {\text{year (2 digits)}} + \overbrace{3 m_1 + m_2} ^ {\text{month (2 digits)}} + \overbrace{9 d_1 + 7 d_2} ^ {\text{day (2 digits)}} } _{\text{date of birth (6 digits)}} + \underbrace{ 3 s_1 + s_2 + 9 s_3 + 7 s_4}_{\text{serial number (4 digits)} }\right)\mod 10$where:

**$y_1, y_2$**- 2 digits of year of birth,

**$m_1, m_2$**- 2 digits of month of birth,

**$d_1, d_2$**- 2 digits of day of birth,

**$s_1, s_2, s_3, s_4$**- 4 digits of serial number,

**$x \mod 10$**- the rest of the division number x (in our case expression in parenthesis) by ten.

- ⓘ Example: We've got PESEL number
**84011201654**. We can read from it:

- date of birth: January 12, 1984 (first 6 digits: 840112),

- serial number: 0165 (next 4 digits),

- the number owner is men (serial number is odd)

- date of birth: January 12, 1984 (first 6 digits: 840112),
- ⓘ Example: We've got PESEL number
**03231256844**. We can read from it:

- date of birth: March 12, 2003 (first 6 digits: 032312),

- serial number: 5684 (next 4 digits),

- the number owner is women (serial number is even).

- date of birth: March 12, 2003 (first 6 digits: 032312),

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