Question

show that 13×41×43+41 is a composite number

Answer 1

41×(13×43+1)
41×(559+1)
41×560 which is a composite number

Answer 2

$13 \times 41 \times 43 \times 41 \\ 41(13 \times 43 \times 1)$
THEN,

13 (559+1)

13 × 560

$hence \: it \: \: a \:$
composite number