λ
Sequence Observatory

248,131

13 × 19087
Deficient Odd Composite

Starting at 248,131, the Collatz iteration reaches 1 after 119 steps. The first transition is 744394; the starting value is odd with 4 positive divisors.

Prime Factor Structure

Factorization String 13 × 19087
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 4
Divisor Sum (σ) 267,232
Proper Divisor Sum 19,101
Digit Sum / Digital Root 19 (Root: 1)
Adjacent Primes #248119 ← → #248137

Radix Representation

Decimal 248131
Binary 111100100101000011 (18 bits)
Octal 0o744503
Hexadecimal 0x3C943

Divisor Catalog (4)

1 13 19,087 248,131

Collatz Trajectory (119 steps to reach 1)

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

248,131 744,394 372,197 1,116,592 558,296 279,148 139,574 69,787 209,362 104,681 314,044 157,022 78,511 235,534 117,767 353,302 176,651 529,954 264,977 794,932 397,466 198,733 596,200 298,100 149,050 74,525 223,576 111,788 55,894 27,947 83,842 41,921 125,764 62,882 31,441 94,324 47,162 23,581 70,744 35,372 17,686 8,843 26,530 13,265 39,796 19,898 9,949 29,848 14,924 7,462 3,731 11,194 5,597 16,792 8,396 4,198 2,099 6,298 3,149 9,448

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