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COMMON BINARY STRUCTURES Largest Total Values Decimal Value Bits (Including 0) (All 1 Bits) 4 16 16-1 15 8 256 256-1 255 16 64K (kilo) 64K-1 65,535 32 4G (giga) 4G-1 4,294,967,295 64 16E (exa) 16E-1 (see below) BINARY VALUES FROM 1 TO 64 BITS Largest Total Values Decimal Value Bits (Including 0) (All 1 Bits) 1 2 1 (1) 2 4 11 (3) 3 8 111 (7) 4 16 1111 (15) 5 32 1 1111 (31) 6 64 11 1111 (63) 7 128 111 1111 (127) 8 256 1111 1111 (255) 9 512 1 1111 1111 (511) Kilo (thousand) 10 1,024 1K 11 1111 1111 11 2,048 2K 111 1111 1111 12 4,096 4K 1111 1111 1111 13 8,192 8K 1 1111 1111 1111 14 16,384 16K 11 1111 1111 1111 15 32,768 32K 111 1111 1111 1111 16 65,536 64K 1111 1111 1111 1111 17 131,072 128K 1 1111 1111 1111 1111 18 262,144 256K 11 1111 1111 1111 1111 19 524,288 512K 111 1111 1111 1111 1111 Mega (million) 20 1,048,576 1M 21 2,097,152 2M 22 4,194,304 4M 23 8,388,608 8M 24 16,777,216 16M 25 33,554,432 32M 26 67,108,864 64M 27 134,217,728 128M 28 268,435,456 256M 29 536,870,912 512M Giga (billion) 30 1,073,741,824 1G 31 2,147,483,648 2G 32 4,294,967,296 4G 33 8,589,934,592 8G 34 17,179,869,184 16G 35 34,359,738,368 32G 36 68,719,476,736 64G 37 137,438,953,472 128G 38 274,877,906,944 256G 39 549,755,813,888 512G Tera (trillion) 40 1,099,511,627,776 1T 41 2,199,023,255,552 2T 42 4,398,046,511,104 4T 43 8,796,093,022,208 8T 44 17,592,186,044,416 16T 45 35,184,372,088,832 32T 46 70,368,744,177,664 64T 47 140,737,488,355,328 128T 48 281,474,976,710,656 256T 49 562,949,953,421,312 512T Peta (quadrillion) 50 1,125,899,906,842,624 1P 51 2,251,799,813,685,248 2P 52 4,503,599,627,370,496 4P 53 9,007,199,254,740,992 8P 54 18,014,398,509,481,984 16P 55 36,028,797,018,963,968 32P 56 72,057,594,037,927,936 64P 57 144,115,188,075,855,872 128P 58 288,230,376,151,711,844 256P 59 576,460,752,303,423,480 512P Exa (quintillion) 60 1,152,921,504,606,846,976 1E 61 2,305,843,009,213,693,952 2E 62 4,611,686,018,427,387,904 4E 63 9,223,372,036,854,775,808 8E 64 18,446,744,073,709,551,616 16E