λ
Sequence Observatory

1,231,060

22 × 5 × 61553
Abundant Even Composite

Starting at 1,231,060, the Collatz iteration reaches 1 after 54 steps. The first transition is 615530; the starting value is even with 12 positive divisors.

Prime Factor Structure

Factorization String 2^2 × 5 × 61553
Distinct Prime Factors 3
Square Status No
Abundance Measure Abundant

Analytical Properties

Total Divisors 12
Divisor Sum (σ) 2,585,268
Proper Divisor Sum 1,354,208
Digit Sum / Digital Root 13 (Root: 4)
Adjacent Primes #1231051 ← → #1231063

Radix Representation

Decimal 1231060
Binary 100101100100011010100 (21 bits)
Octal 0o4544324
Hexadecimal 0x12C8D4

Divisor Catalog (12)

1 2 4 5 10 20 61,553 123,106 246,212 307,765 615,530 1,231,060

Collatz Trajectory (54 steps to reach 1)

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

1,231,060 615,530 307,765 923,296 461,648 230,824 115,412 57,706 28,853 86,560 43,280 21,640 10,820 5,410 2,705 8,116 4,058 2,029 6,088 3,044 1,522 761 2,284 1,142 571 1,714 857 2,572 1,286 643 1,930 965 2,896 1,448 724 362 181 544 272 136 68 34 17 52 26 13 40 20 10 5 16 8 4 2 1

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