Language name and location: Olulumo-Ikom, Cross River, Nigeria [Ref to Ethnologue]语言名称和分布地区: 奥鲁鲁莫-伊科姆语, 尼日利亚南部克罗斯河州

1. bunɛ

21.  ɛram irɨma bunɛ

2. bɛfa

22.  ɛram irɨma bɛfa

3. bɛtaa

23.  ɛram irɨma bɛtaa

4. bɛnaa

24.  ɛram irɨma bɛnaa

5. bɛtan

25.  ɛram irɨma bɛtan

6. bɛtabɛta   ( 3 + 3 )

26.  ɛram irɨma bɛtabɛta

7. bɛnabɛtaa ( 3 + 4 )

27.  ɛram irɨma bɛnabɛtaa

8. bɛnabɛna  ( 4 + 4 )

28.  ɛram irɨma bɛnabɛna

9. bɛtanabɛ   ( 5 + 4 ?)

29.  ɛram irɨma bɛtanabɛ

10. jubi

30.  ɛram irɨma jubi 

11. jubi na bunɛ ( 10 + 1 )

40.  iram ifa ( 20 x 2 )

12. jubi na bɛfa

50.  iram ifa jubi

13. jubi na bɛtaa

60.  iram itaa ( 20 x 3 )

14. jubi na bɛnaa

70.  iram itaa jubi 

15. rokura

80.  iram inaa ( 20 x 4 )

16. rokura na bunɛ ( 15 + 1 )

90.  iram inaa jubi 

17. rokura na bɛfa

100. iram itan ( 20 x 5 ), 200. iram jubi

18. rokura na bɛtaa

1000. igod itan, 2000. igod jubi

19. rokura na bɛnaa

3000. igod rokura, 4000. igod ɛram 

20. ɛram

1000,0000. igod ɛram irɨma itan

Linguist providing data and dateː Mr. Gimba Benjamin, Luke Initiative for Scripture Translation, Jos, Plateau State, Nigeria, September 22, 2021.
提供资料的语言学家: Mr. Gimba Benjamin, 2021 年 9 月 22 日.

Other comments: Olulumo-Ikom or Lulumo is spoken by approximately 30,000 speakers in Cross River state: Ikom LGA, Nigeria. Olulumo-Ikom has a vigesimal numeral system and separate words for 15. There are higher numbers: 1,000. igod itan (200 x 5), 2,000. igod jubi (200 x 10), 3,000. igod rokura (200 x 15), 4,000. igod ɛram  (200 x 20), 5.000. igod ɛram irima itan  (200 x 20+20 x 5), 6,000. igod ɛram irima jubi (200 x 20+20 x 10), 7,000. igod ɛram irima rokura (200 x 20+20 x 15).

The above data is taken from Nkome / Nkɔmɛ / Ikom dialect.

Note the symbols used aboveː /y/ = IPA /j/ and /j/ = IPA /dz /.