67777

Properties

Appears in sequences

• Primes that contain digits 6 and 7 only.at n=3A020469
• Smallest n-digit prime containing only the digits 6 and 7, or 0 if no such prime exists.at n=4A036948
• Numbers having four 7's in base 10.at n=6A043520
• Primes with either no internal digits or all internal digits are 7.at n=51A069682
• Primes of the form identical digits preceded by a 6.at n=3A090154
• Primes of the form 6*10^k + 7*R_k, where R_k is the repunit (A002275) of length k.at n=2A093942
• Number of polyominoes consisting of 6 regular unit n-gons.at n=28A103472
• Near-repdigit primes with 7 as repeated digit.at n=20A105977
• Primes with minimal digit = 6.at n=36A106106
• Primes such that the outer 2 digits are k and k+1 and all inner digits are 7, where 0 < k < 9.at n=3A108824
• Primes with at least one digit appearing exactly four times in the decimal expansion.at n=22A161786
• Primes containing 777 as a substring.at n=17A167282
• Number of (w,x,y,z) with all terms in {1,...,n} and 3w<x+y+z+n.at n=17A212249
• Primes formed by an m-digit prime concatenated with its last (m-1) digits, for m > 1.at n=34A252667
• Primes having only {5, 6, 7} as digits.at n=23A260829
• Primes having only {1, 6, 7} as digits.at n=36A260891
• Primes having only {6, 7, 9} as digits.at n=28A261184
• Prime numbers with monotonically increasing digits, increasing by only 0 or 1.at n=21A378774
• Primes ending in 777.at n=13A381004
• Primes having only {0, 6, 7} as digits.at n=12A385770