All 4D bankers supply their check number facility.  The followings are links for their respective check number facility :

Singapore 4D : http://www.singaporepools.com.sg/Lottery?page=four_d

Magnum : http://www.magnumit.com/magnum4d/MDresults_statistics.asp

TOTO 4D : http://www.sportstoto.com.my/g_statistic/myfav.asp

In Singapore and Malaysia, each 4D draw has 23 outcomes.  4D has 10000 4D-digits in its pool.  If you let 10000 to be divided by 23, the answer is close to 435.  In another words, consecutive 435 draws will use up all the 4D-digits, provided each 4D-digit can only appear once within 435 draws.  If you disregard the special draws for Magnum and TOTO 4D in Malaysia, we have three draws in every week.  435 draws stand for 145 weeks, and 145 weeks means 2 years and 41 weeks.

In the above simplified assumption, if 4D bankers wouldn’t allow the outcome to repeat unless all the 4D-digits have their equal chance of appearance, then we have the followings :

1.  All the 4D-digits will appear at least once within 435 consecutive draws,

2.  All the 4D-digits will appear at least once within 145 consecutive weeks,

3.  All the 4D-digits will appear at least once within 2 years and 41 weeks.

But what the above two paragraphs disclosed are NOT the truth !!

We did the calculation for Singapore 4D, Magnum and TOTO 4D through their respective check number facility.  In another words, we used the check number facility to check the repetition of each 4D-digit !!  Luckily we use computer programme to do so !!

What we find out is that three of them all have around 6000 4D-digits used in 435 consecutive draws, or 145 consecutive weeks, or 2 years and 41 weeks.  We also use this information within our updates. 

For Singapore 4D, 5931 has 7 appearances from 10/May/2003 to 11/Jun/2006.  2156, 3945, 8728, 9848 have 6 appearances from 10/May/2003 to 11/Jun/2006.  5054, 5055, 5056, 5058, 5059 never appear from 10/May/2003 to 11/Jun/2006.  These are just some of the examples and you can verify that through the Singapore 4D check number facility.

For Magnum, 4350, 4897 have 8 appearances from 1/Jan/2003 to 10/Jun/2006.  4986 has 7 appearances from 1/Jan/2003 to 10/Jun/2006.  6060, 6061, 6062, 6063, 6064, 6068, 6069 never appear from 1/Jan/2003 to 10/Jun/2006.  These are just some of the examples and you can verify that through the Magnum check number facility.

For TOTO 4D, 3795 has 7 appearances from 18/October/2003 to 10/Jun/2006.  0056, 0216, 3139, 5230, 6874, 7374, 7633 have 6 appearances from 18/October/2003 to 10/Jun/2006.  7251, 7252, 7254, 7256, 7259 never appear from 18/October/2003 to 10/Jun/2006.  These are just some of the examples and you can verify that through the TOTO 4D check number facility.

Usually those 4D-digits never appear within 435 consecutive draws will appear first in Special prizes or Consolation prizes.  This is one of the subtle and yet tricky parts of 4D bankers.  4D bankers prefer to lure 4D player through the Special prizes and Consolation prizes.  In another words, 4D bankers usually choose their First prize from the pool of Special prizes or the pool of Consolation prizes within the past 435 consecutive draws.  But occasionally, 4D bankers will act otherwise.

We suggest you all to check the outcome history of your bets.  Those come out most within the past 435 consecutive draws are hardly the choice for the First prize.  This is an alternative proof that 4D First prize is not a random outcome, check number facility will give you a helping hand in making your choice.