How can I find groups ID on Facebook to join?

Top 50 Groups FB Just Updated

IDMembers
16826907052763145,504,509
bangladeshbiggestgroup5,404,372
4703729231130113,517,455
azadmanemukto2,685,315
4994068834454132,643,184
7951893672936702,436,122
bdofficialgroup2,316,548
ClubNsNj2,275,197
BESTFRIEND.BESTFRIENDS1,957,226
purpletudungmurah1,717,290
valobasharnir.bangladesh1,597,236
14862463916653291,396,218
NARENDRAMODI311,378,871
zoombanglaforum1,239,444
Awaisrock1,178,381
PurpleKosmetikMurah1,159,302
TermuraheShop1,150,786
MBD.OriGinaL1,041,496
9496513550768561,014,922
nationalmedline977,606
962665883803779951,657
takko.fashion.stock940,062
725997237430905933,695
868868483220320876,920
taurangeela852,616
du302016movement832,741
Easycookingmenu822,232
185389451792129820,966
gengbisneskakitangankerajaan792,764
347146758792160761,842
ActiveLikersOnly02737,082
137348286277507728,043
196986080500041697,805
1614584852120648697,180
swiftsouthafrica690,694
GOR.OFFICIAL643,876
1586503675005415614,989
teuhpy1603,572
1015557461828443601,494
beauty.queen09598,692
1399614277028551595,117
355433867962284591,379
576139389214387579,807
createtivity552,282
239877176371910550,866
birktube520,915
teakadaibenchgroup520,595
320449791373400511,951
309472556081534509,859
1664718963766888477,003