A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 4761000 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 18 20 23 24 25 30 36 40 45 46 50 60 69 72 75 90 92 100 115 120 125 138 150 180 184 200 207 225 230 250 276 300 345 360 375 414 450 460 500 529 552 575 600 690 750 828 900 920 1,000 1,035 1,058 1,125 1,150 1,380 1,500 1,587 1,656 1,725 1,800 2,070 2,116 2,250 2,300 2,645 2,760 2,875 3,000 3,174 3,450 4,140 4,232 4,500 4,600 4,761 5,175 5,290 5,750 6,348 6,900 7,935 8,280 8,625 9,000 9,522 10,350 10,580 11,500 12,696 13,225 13,800 15,870 17,250 19,044 20,700 21,160 23,000 23,805 25,875 26,450 31,740 34,500 38,088 39,675 41,400 47,610 51,750 52,900 63,480 66,125 69,000 79,350 95,220 103,500 105,800 119,025 132,250 158,700 190,440 198,375 207,000 238,050 264,500 317,400 396,750 476,100 529,000 595,125 793,500 952,200 1,190,250 1,587,000 2,380,500 and 4,761,000, with no remainder.
Since 4,761,000 cannot be divided by just 1 and 4,761,000, it is not a prime number.