select number(varchar) from payments where paymentid(int) is the smallest/ largest

CREATE TABLE [dbo].[payments](
      [paymentid] [int] IDENTITY(1,1) NOT NULL,
      [orderid] [int] NOT NULL,
      [dateentered] [datetime] NULL,
      [datebilled] [datetime] NULL,
      [type] [varchar](50) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
      [number] [varchar](80) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
      [expiration] [varchar](10) COLLATE SQL_Latin1_General_CP1_CI_AS NULL,
      [CV2] [int] NOT NULL,
      [confirmation] [varchar](70) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
      [resultcode] [varchar](40) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
      [debit] [money] NOT NULL,
      [paymentinfo] [text] COLLATE SQL_Latin1_General_CP1_CI_AS NULL,
      [ebayquantity] [varchar](25) COLLATE SQL_Latin1_General_CP1_CI_AS NULL,
      [paymentfee] [varchar](30) COLLATE SQL_Latin1_General_CP1_CI_AS NULL,
      [email] [varchar](300) COLLATE SQL_Latin1_General_CP1_CI_AS NULL,
 CONSTRAINT [PK_payments] PRIMARY KEY CLUSTERED
(
      [paymentid] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]


select number(varchar) from payments where paymentid(int) is the smallest

and another query

select number(varchar) from payments where paymentid(int) is the largest