素数和合数的意思,怎么才能快速得看出是质数还是合数?我搞不清楚_百度...答:1 既不是素数,也不是合数。所以最小的素数是2 ;最小的合数是4 。对于小数字,把它 “ 背 ” 下来(换种说法,叫做“记下来”)。如100以下的数中:2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,91,97都是素数,除 1 外,其它都是合数...
347是质数还是合数?答:347是质数 500以内质数表 2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97,101,103,107,109,113,127,131,137,139,149,151,157,163,167,173,179,181,191,193,197,199,211,223,227,229,233,239,241,251,257,263,269,271,277,281,283,293,307...
841是质数还是合数答:合数 2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97,101,103,107,109,113,127,131,137,139,149,151,157,163,167,173,179,181,191,193,197,199,211,223,227,229,233,239,241,251,257,263,269,271,277,281,283,293,307,311,313,317,331,...