To the best of my knowledge, it's just a sign of good luck from 777 being the biggest payout on a slot machine.
new answerI know nothing of tattoos, but I can give the spiritual significance based on my studies of mind and the form of numerology which correlates with the process of creation. The three sevens would indicate control of all three divisions of mind, conscious,subconscious, and superconscious. Three itself represents purpose or creativity. The numbers digit to 3. Add 777=21, add 2+ 1= 3. Another way to relate to 3 is the trinity, father,son. and holy ghost or spirit. The spirit manifests in each division of mind according to its own function. The person with this tattoo would have consciously or unconsciously chosen a symbol of wholeness.Someday.
Another Answer.
777 is also considered a sacred number in Hebrew traditions, in Kabbalah, and Hermeticism. In the Qabalistic sense, 777 refers to the 'Flaming Sword', or path that runs through the Tree of Life, tying together the 22 paths. Occultist Aleister Crowley discussed 777 in reference to Qabalistic and Hermetic traditions in his book '777 and other Qabalistic writings' . In this work the second part or book is 'Liber 777' which opens stating; 'The Following is an attempt to systematise alike the data of mysticism and the results of comparative religion'... [Crowley, Liber 777, ix, Weiser Publications 1986] Shortly after Crowley states; 'We can refer everything in the Universe to the system of pure number, whose symbols will be intelligible to all rational minds in an identical sense. And the relations between these symbols are fixed by nature. There is no particular point-for most ordinary purposes-in discussing whether 49 is or is not the square of 7' [Crowley, Liber 777, xix, Weiser Publications 1986]. As we can see Crowley's aim is purely logical and rational in his approach to numbers as universal data which, when followed properly, cannot be refuted. The relation of letters or words being attributed to numbers is an ancient Hebrew tradition, not the work of Western Esoteric tradition, although Crowley rekindled Western Occult schools interest in it.
'777' is not the opposite of '666', and is not related with Daemonology.
To further on my last answer there is also this, from wiki:
According to various Judaic sources, the Star or Shield of David signifies the number seven: that is, the six points plus the center. The earliest known Jewish text to mention the symbol is Eshkol Ha-Kofer by the Karaite Judah Hadassi, in the mid-12th century CE:
"Seven names of angels precede the mezuzah: Michael, Gabriel, etc. ... Tetragrammaton protect you! And likewise the sign, called the 'Shield of David', is placed beside the name of each angel."[2]
The Menorah on the Arch of Titus: notice the three stems on each side plus the central stem, totaling seven
The number seven has religious significance in Judaism, e.g., the six days of Creation plus the seventh day of rest, the six working days in the week plus Shabbat, the Seven Spirits of God, as well as the Menorah in the ancient Temple, whose seven oil lamps rest on three stems branching from each side of a central pole. Perhaps, the Star of David came to be used as a standard symbol in synagogues because its organization into 3+3+1 corresponds to the Temple's Menorah, which was the more traditional symbol for Judaism in ancient times. There are also six words in the Shema, the most important prayer in Judaism, and it is not uncommon to find the Shema written around a Star of David.
Continued (Nefiliim): " The "Lamb in the midst of the throne" in Revelation 5:6, has seven horns and seven eyes, which are the seven spirits of God. The geometer's image of this is the seven horns and seven triangles containing eyes. The eyed triangle of the heptagon, which has the base angle nearly the same as that of the Great Pyramid in Egypt may be the origin of the mystic symbol of the eye in the pyramid." [Michell, The Dimensions of Paradise; Sacred Geometry, Ancient Science, and the heavenly order on Earth, Inner traditions Press, Vermont, 1971, 88]
"No one has yet discovered how to construct a perfect heptagon; it is one of the mysteries associated with the number 7" [Ibid, 86]
More to come...
More Significant Answer
Several friends of mine have 777 as a focal point of certain tattoos. All of them got them done due to the biblical significance of 7 in revelation(7 seals,trumpets ect). However in addition to this their favorite band Underoath (christian metal core) uses 777 in correlation with their band such as their 777 DVD as well as their website. Essentially everyone i know with a 777 tattoo has it for the religious significance.
Hope this helped
Humanist 777
there was no significance.
The significance was that she made "trips" to create aeronautic records.
7 is the "lucky" number so they use triple 7 for jackpots and other games.
The significance of the cave that Monet looked at was that it was the source where the major crisis started. This cave was the source of the Ebola virus.
39% of 777 = 39% * 777 = 0.39 * 777 = 303.03
12% of 777 = 12% * 777 = 0.12 * 777 = 93.24
33 777
777 account
1554
777 account
The 777-200 can carry 117,348 litres ; the 777-200ER 171,176 litres ; the 777-200LR 181,283 litres; the 777-300 171,176 litres and the 777-300ER, 181,283 litres
777 = DCCLXXVII
The main difference is that the 777-300ER is a longer ranged version of the 777-300.
The 777-200 is 63.7m long while the 777-300 is 73.9m long.
777*7 = 5439
777 - 248 = 529