SR Tendulkar’s 100 in the second innings of the first test against South Africa at Nagpur represented his 100^th fifty in tests. He became the first batsman in the annals of test cricket to register 100 fifties. It’s just a coincidence that his 100^th fifty was an exact 100. All his 100 fifties are listed below

No	Runs	Pos	Inns	Opposition	Ground	Mon/Yr
1	59	6	1	v Pakistan	Faisalabad	Nov 1989
2	57	6	3	v Pakistan	Sialkot	Dec 1989
3	88	6	1	v New Zealand	Napier	Feb 1990
4	68	6	2	v England	Manchester	Aug 1990
5	119*	6	4	v England	Manchester	Aug 1990
6	148*	6	2	v Australia	Sydney	Jan 1992
7	114	4	2	v Australia	Perth	Feb 1992
8	111	4	2	v South Africa	Johannesburg	Nov 1992
9	73	5	2	v South Africa	Cape Town	Jan 1993
10	50	4	1	v England	Kolkata	Jan 1993
11	165	4	1	v England	Chennai	Feb 1993
12	78	4	2	v England	Mumbai	Feb 1993
13	62	4	1	v Zimbabwe	Delhi	Mar 1993
14	104*	4	3	v Sri Lanka	Colombo (SSC)	Jul 1993
15	71	4	2	v Sri Lanka	Colombo (PSS)	Aug 1993
16	142	4	1	v Sri Lanka	Lucknow	Jan 1994
17	96	4	1	v Sri Lanka	Bangalore	Jan 1994
18	85	5	3	v West Indies	Mumbai	Nov 1994
19	179	4	1	v West Indies	Nagpur	Dec 1994
20	54	4	3	v West Indies	Nagpur	Dec 1994
21	52*	4	1	v New Zealand	Chennai	Oct 1995
22	122	4	3	v England	Birmingham	Jun 1996
23	177	4	1	v England	Nottingham	Jul 1996
24	74	4	3	v England	Nottingham	Jul 1996
25	61	4	1	v South Africa	Kanpur	Dec 1996
26	169	5	2	v South Africa	Cape Town	Jan 1997
27	88	4	2	v West Indies	Port of Spain	Mar 1997
28	92	4	2	v West Indies	Bridgetown	Mar 1997
29	83	4	1	v West Indies	Georgetown	Apr 1997
30	143	4	1	v Sri Lanka	Colombo (RPS)	Aug 1997
31	139	4	2	v Sri Lanka	Colombo (SSC)	Aug 1997
32	148	5	1	v Sri Lanka	Mumbai	Dec 1997
33	155*	4	3	v Australia	Chennai	Mar 1998
34	79	4	2	v Australia	Kolkata	Mar 1998
35	177	4	1	v Australia	Bangalore	Mar 1998
36	113	5	3	v New Zealand	Wellington	Dec 1998
37	67	4	2	v New Zealand	Hamilton	Jan 1999
38	136	4	4	v Pakistan	Chennai	Jan 1999
39	53	4	1	v Sri Lanka	Colombo (SSC)	Feb 1999
40	124*	4	3	v Sri Lanka	Colombo (SSC)	Feb 1999
41	126*	4	3	v New Zealand	Mohali	Oct 1999
42	217	4	1	v New Zealand	Ahmedabad	Oct 1999
43	61	5	2	v Australia	Adelaide	Dec 1999
44	116	4	2	v Australia	Melbourne	Dec 1999
45	52	4	4	v Australia	Melbourne	Dec 1999
46	97	4	1	v South Africa	Mumbai	Feb 2000
47	122	4	2	v Zimbabwe	Delhi	Nov 2000
48	201*	4	1	v Zimbabwe	Nagpur	Nov 2000
49	76	4	1	v Australia	Mumbai	Feb 2001
50	65	5	3	v Australia	Mumbai	Feb 2001
51	126	4	2	v Australia	Chennai	Mar 2001
52	74	4	2	v Zimbabwe	Bulawayo	Jun 2001
53	69	4	3	v Zimbabwe	Harare	Jun 2001
54	155	4	1	v South Africa	Bloemfontein	Nov 2001
55	88	5	2	v England	Mohali	Dec 2001
56	103	4	2	v England	Ahmedabad	Dec 2001
57	90	4	2	v England	Bangalore	Dec 2001
58	176	4	2	v Zimbabwe	Nagpur	Feb 2002
59	79	4	2	v West Indies	Georgetown	Apr 2002
60	117	4	1	v West Indies	Port of Spain	Apr 2002
61	86	4	4	v West Indies	Kingston	May 2002
62	92	4	3	v England	Nottingham	Aug 2002
63	193	4	1	v England	Leeds	Aug 2002
64	54	4	2	v England	The Oval	Sep 2002
65	176	4	3	v West Indies	Kolkata	Oct 2002
66	51	4	3	v New Zealand	Wellington	Dec 2002
67	55	4	2	v New Zealand	Mohali	Oct 2003
68	241*	4	1	v Australia	Sydney	Jan 2004
69	60*	4	3	v Australia	Sydney	Jan 2004
70	194*	4	1	v Pakistan	Multan	Mar 2004
71	55	4	3	v Australia	Mumbai	Nov 2004
72	248*	4	2	v Bangladesh	Dhaka	Dec 2004
73	94	4	2	v Pakistan	Mohali	Mar 2005
74	52	4	1	v Pakistan	Kolkata	Mar 2005
75	52	4	3	v Pakistan	Kolkata	Mar 2005
76	109	4	1	v Sri Lanka	Delhi	Dec 2005
77	63	4	2	v South Africa	Durban	Dec 2006
78	64	4	1	v South Africa	Cape Town	Jan 2007
79	101	4	1	v Bangladesh	Chittagong	May 2007
80	122*	4	1	v Bangladesh	Dhaka	May 2007
81	91	4	2	v England	Nottingham	Jul 2007
82	82	4	1	v England	The Oval	Aug 2007
83	56*	4	4	v Pakistan	Delhi	Nov 2007
84	82	4	1	v Pakistan	Kolkata	Nov 2007
85	62	4	2	v Australia	Melbourne	Dec 2007
86	154*	4	2	v Australia	Sydney	Jan 2008
87	71	4	1	v Australia	Perth	Jan 2008
88	153	4	1	v Australia	Adelaide	Jan 2008
89	88	4	1	v Australia	Mohali	Oct 2008
90	68	4	1	v Australia	Delhi	Oct 2008
91	109	4	1	v Australia	Nagpur	Nov 2008
92	103*	4	4	v England	Chennai	Dec 2008
93	160	4	2	v New Zealand	Hamilton	Mar 2009
94	64	4	3	v New Zealand	Napier	Mar 2009
95	62	4	1	v New Zealand	Wellington	Apr 2009
96	100*	5	3	v Sri Lanka	Ahmedabad	Nov 2009
97	53	4	2	v Sri Lanka	Mumbai (BS)	Dec 2009
99	105*	4	1	v Bangladesh	Chittagong	Jan 2010
99	143	4	2	v Bangladesh	Dhaka	Jan 2010
100	100	4	3	v South Africa	Nagpur	Feb 2010

The progressive milestones of his fifties are tabulated below. It is interesting to note that barring his first fifty which came at Faisalabad, his 25^th, 50^th, 75^th and 100^th fifties were regisrtred on home soil

No	Runs	Pos	Inns	Opposition	Ground	Mon/Yr
1	59	6	1	v Pakistan	Faisalabad	Nov 1989
25	61	4	1	v South Africa	Kanpur	Dec 1996
50	65	5	3	v Australia	Mumbai	Feb 2001
75	52	4	3	v Pakistan	Kolkata	Mar 2005
100	100	4	3	v South Africa	Nagpur	Feb 2010