DARXX Dreyfus Treasury Prime Cash Mgmt Administrative Shs (MM)

000 A000000 07/31/2013
000 C000000 0000843781
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 6.1
000 J000000 U
001 A000000 DREYFUS TREASURY PRIME CASH MANAGEMENT
001 B000000 811-5718
001 C000000 2129226837
002 A000000 200 PARK AVENUE
002 B000000 NEW YORK
002 C000000 NY
002 D010000 10166
002 D020000 0144
003  000000 N
004  000000 N
005  000000 N
006  000000 N
007 A000000 N
007 B000000  0
007 C010100  1
007 C010200  2
007 C010300  3
007 C010400  4
007 C010500  5
007 C010600  6
007 C010700  7
007 C010800  8
007 C010900  9
007 C011000 10
008 A000001 THE DREYFUS CORPORATION
008 B000001 A
008 C000001 801-8147
008 D010001 NEW YORK
008 D020001 NY
008 D030001 10166
011 A000001 MBSC SECURITIES CORPORATION
011 B000001 8-13801
011 C010001 NEW YORK
011 C020001 NY
011 C030001 10166
012 A000001 DREYFUS TRANSFER, INC.
012 B000001 85-11312
012 C010001 NEW YORK
012 C020001 NY
012 C030001 10166
013 A000001 ERNST & YOUNG LLP
013 B010001 NEW YORK

013 B020001 NY
013 B030001 10036
014 A000001 BNY MELLON CAPITAL MARKETS, LLC
014 B000001 8-35255
014 A000002 CONVERGEX EXECUTION SOLUTIONS, LLC
014 B000002 8-46838
014 A000003 CONVERGEX PRIME SERVICES
014 B000003 8-67289
014 A000004 EZE CASTLE TRANSACTION SERVICES LLC
014 B000004 8-66577
014 A000005 G-TRADE SERVICES LLC
014 B000005 8-67304
015 A000001 THE BANK OF NEW YORK MELLON
015 B000001 C
015 C010001 NEW YORK
015 C020001 NY
015 C030001 10286
015 E030001 X
018  000000 Y
019 A000000 Y
019 B000000  140
019 C000000 DREYFUSFAM
020 C000001      0
020 C000002      0
020 C000003      0
020 C000004      0
020 C000005      0
020 C000006      0
020 C000007      0
020 C000008      0
020 C000009      0
020 C000010      0
021  000000        0
022 A000001 BARCLAYS CAPITAL INC.
022 B000001 06-1031656
022 C000001  20533826
022 D000001  14660074
022 A000002 GOLDMAN, SACHS & CO.
022 B000002 13-5108880
022 C000002  15361525
022 D000002  10691676
022 A000003 DAIWA SECURITIES AMERICA INC.
022 B000003 13-5680329
022 C000003  18830152
022 D000003   2530033
022 A000004 NOMURA SECURITIES INTERNATIONAL, INC.
022 B000004 13-2642206
022 C000004   7172096
022 D000004   2672933
022 A000005 DEUTSCHE BANK SECURITIES INC.
022 B000005 13-2730828

022 C000005   6294938
022 D000005   2266987
022 A000006 UBS SECURITIES LLC
022 B000006 13-3873456
022 C000006   4276121
022 D000006    249999
022 A000007 COWEN & COMPANY, LLC
022 B000007 38-3698933
022 C000007   3984645
022 D000007         0
022 A000008 JEFFERIES & COMPANY, INC.
022 B000008 95-2622900
022 C000008   3872178
022 D000008         0
022 A000009 CITIGROUP INC.
022 B000009 52-1568099
022 C000009   3711474
022 D000009         0
022 A000010 MORGAN STANLEY
022 B000010 36-3145972
022 C000010   3651189
022 D000010         0
023 C000000  107547348
023 D000000   34811666
028 A010000   5474257
028 A020000         1
028 A030000         0
028 A040000   5884534
028 B010000   6802447
028 B020000         0
028 B030000         0
028 B040000   7554405
028 C010000   7433964
028 C020000         0
028 C030000         0
028 C040000   8079143
028 D010000   9849965
028 D020000         0
028 D030000         0
028 D040000   6888692
028 E010000   8263385
028 E020000         0
028 E030000         0
028 E040000   8673354
028 F010000   7305777
028 F020000         0
028 F030000         0
028 F040000   6581458
028 G010000  45129795
028 G020000         1
028 G030000         0

028 G040000  43661586
028 H000000         0
029  000000 N
030 A000000      0
030 B000000  0.00
030 C000000  0.00
042 A000000   0
042 B000000   0
042 C000000 100
042 D000000   0
042 E000000   0
042 F000000   0
042 G000000   0
042 H000000   0
043  000000  11113
044  000000      0
045  000000 Y
046  000000 N
047  000000 Y
048  000000  0.200
048 A010000        0
048 A020000 0.000
048 B010000        0
048 B020000 0.000
048 C010000        0
048 C020000 0.000
048 D010000        0
048 D020000 0.000
048 E010000        0
048 E020000 0.000
048 F010000        0
048 F020000 0.000
048 G010000        0
048 G020000 0.000
048 H010000        0
048 H020000 0.000
048 I010000        0
048 I020000 0.000
048 J010000        0
048 J020000 0.000
048 K010000        0
048 K020000 0.000
062 A000000 Y
062 B000000 102.7
062 C000000   0.0
062 D000000   0.0
062 E000000   0.0
062 F000000   0.0
062 G000000   0.0
062 H000000   0.0
062 I000000   0.0

062 J000000   0.0
062 K000000   0.0
062 L000000   0.0
062 M000000   0.0
062 N000000   0.0
062 O000000   0.0
062 P000000   0.0
062 Q000000   0.0
062 R000000   0.0
063 A000000  54
063 B000000  0.0
064 A000000 N
064 B000000 N
071 A000000         0
071 B000000         0
071 C000000         0
071 D000000    0
072 A000000  6
072 B000000    12349
072 C000000        0
072 D000000        0
072 E000000        0
072 F000000    32372
072 G000000        0
072 H000000        0
072 I000000      385
072 J000000      470
072 K000000        0
072 L000000      218
072 M000000       91
072 N000000      111
072 O000000        0
072 P000000        0
072 Q000000        0
072 R000000       21
072 S000000       26
072 T000000    11113
072 U000000        0
072 V000000        0
072 W000000      199
072 X000000    45006
072 Y000000    32663
072 Z000000        6
072AA000000      133
072BB000000       81
072CC010000        0
072CC020000        0
072DD010000        5
072DD020000        1
072EE000000        0
073 A010000   0.0000

073 A020000   0.0000
073 B000000   0.0000
073 C000000   0.0000
074 A000000      900
074 B000000        0
074 C000000 35495855
074 D000000        0
074 E000000        0
074 F000000        0
074 G000000        0
074 H000000        0
074 I000000        0
074 J000000        0
074 K000000        0
074 L000000    71576
074 M000000      281
074 N000000 35568612
074 O000000  1000513
074 P000000     1819
074 Q000000        0
074 R010000        0
074 R020000        0
074 R030000        0
074 R040000      557
074 S000000        0
074 T000000 34565723
074 U010000 27125886
074 U020000  7439923
074 V010000     0.00
074 V020000     0.00
074 W000000   1.0000
074 X000000    20316
074 Y000000        0
075 A000000 32640205
075 B000000        0
076  000000     0.00
077 A000000 N
SIGNATURE   JOHN B. HAMMALIAN
TITLE       VICE PRESIDENT