assembly - printing a message in mips -

i have following code in program

li $v1, 4              #system call code print string la $a0, lc             #load address of message $a0 syscall                #print string li $v1, 1              #system call code print integer move $a0, $v0          #move value printed $a0 syscall                #print result 

and

.rdata lc: .asciiz "the factorial of 10 : " 

but when try use in mips says:

unknown system call: 3628800

where 3628800 result want print!

what going wrong?can use jal printf instead , how should write it? in advance

the system call number goes $v0, not $v1.